Chapter 5: The Philonomic Method

A Seven-Step Process for Identifying General Equity in Mosaic Law

This method provides a systematic approach for evaluating any Mosaic command or case law to discern its relationship to a just society. It assumes the justice of the Mosaic economy and asks which elements of a given law were necessary, contingent, or expired, while preserving its moral reasoning.

The method is designed to be as deterministic as possible while acknowledging that exegesis requires wisdom. An enhancement at Step 4b, drawing on John Owen’s formal-reason test from his exposition of Hebrews 7:4, further increases the method’s precision on laws with multi-epoch attestation. The goal is not mechanical application but disciplined judgment: reasoning that can be traced, tested, and reproduced by careful interpreters.

Cross-Reference: For a detailed demonstration of this method in action, see Chapter 6, “Deuteronomy 25:4 as the Litmus Test.” For the precise definition of the form/function distinction that undergirds this method, see Chapter 4, “General Equity as Exposition,” where these terms are formally defined. For the historical-theological foundation of Step 4b, see the discussion of Owen’s formal-reason test in Chapter 4 and the analysis of Owen’s Hebrews commentary.

The Core Logic

The philonomic syllogism applied as method:

Assume justice (the Mosaic economy was just)
Remove the form (what cannot transfer)
What remains is the function (moral reasoning)
Map to a commandment (the Decalogue is the organizing structure)
If it maps, it binds (case law expounds moral law)

Canonical attestation elsewhere in Scripture is confirmatory, not constitutive. The binding force comes from the law itself and its mapping to the Decalogue. Gary North’s observation about bestiality is instructive: there is no New Testament restatement, but the moral logic is complete in the Torah itself.

For laws with multi-epoch attestation and debatable form/function boundaries, the enhanced method includes Step 4b – Owen’s formal-reason test – as an optional precision tool. This sub-step does not add an eighth step; the fundamental seven-step structure remains intact. Step 4b sharpens the analysis where the synchronic method alone is under-determined.

The Seven Steps

Step 1: Wooden Literalism (List All Elements That Cannot Transfer)

Purpose: Force the interpreter to be maximally literal first before reasoning about what transfers.

What to do:

List every element that makes this law literally impossible to implement today:
- Geographic specificity (Canaan, Transjordan, specific cities)
- Institutional dependencies (high priest, Levitical cities, temple, tribal elders)
- Agricultural/technological context (oxen, threshing floors, flat roofs)
- Economic structures (specific livestock values, land allotments, jubilee cycles)
- Covenant-specific elements (Urim/Thummim, cities of refuge, theocratic mechanisms)

Output: A list of “form” elements that cannot transfer directly.

Why this matters:

Prevents skipping steps that should be made explicit
Human cognition is too quick to find metaphor; this slows us down
If we cannot list what is literally impossible, we have not understood the text
Only AFTER establishing what cannot transfer do we ask what DOES transfer

Step 2: Presuppositions (Surface All Assumptions Exhaustively)

Purpose: Surface what the text assumes rather than states. This step must be thorough; we want to make every assumption explicit before we begin categorizing.

What to do:

For each element of the law, ask: “What must be true for this to be felicitously stated?”
Do NOT categorize into form/function yet (that comes in Step 3)
Be exhaustive; no assumption is too obvious to state
Include assumptions about:
- Existence and ontology
- Authority and obligation
- Relationships and hierarchy
- The work/activity described
- Needs and nature of parties involved
- The prohibited/commanded action
- Moral logic and reasoning
- Value and worth
- What this reveals about the Lawgiver
- The existential/experiential dimension (how parties experience the situation)

Triperspectival Aid for Thoroughness:

To ensure exhaustive coverage, consider each element from all three perspectives (following John Frame’s triperspectival method):

Normative: What does this law assume about God’s standards, authority, and moral order? What must be true about right and wrong for this command to make sense?
Situational: What does this law assume about the facts, context, and circumstances? What must be true about the world, the parties involved, and the situation being addressed?
Existential: What does this law assume about how persons (or creatures) experience the situation? How does the wronged party feel the injustice? How does obedience or disobedience affect the heart of the one who acts? What does this reveal about God’s care for experienced suffering, not just abstract principle?

A Note on Perspective Balance: Case laws are by nature heavily weighted toward the Situational perspective. The Ten Commandments provide the Normative framework (the moral standard in summary form). Case laws then work out what that standard looks like in concrete situations: what happens when an ox treads grain, when a thief is caught, when a neighbor’s animal falls into a pit. This is why Step 2 will naturally generate many situational presuppositions. This is not a flaw; it reflects the nature of case law itself. The Normative is not absent (it undergirds everything), but the case law’s purpose is to show how the Normative applies to the Situational. The Existential dimension reminds us that these situations involve real creatures who experience justice and injustice, not merely abstract principles being applied.

Methodological Note: The presuppositional analysis approach used here is adapted from Knud Lambrecht’s work on pragmatic presupposition in linguistic theory (Information Structure and Sentence Form, 1994). Lambrecht’s framework asks what propositions a speaker assumes the hearer already knows or takes for granted. Applied to biblical law, this surfaces what God assumes His people understand about reality, morality, and human nature when He issues a command.¹

Output: A comprehensive list of presuppositions, uncategorized.

Why this matters:

Reveals the moral law written on hearts: what commands assume about human nature
Forces the interpreter to slow down and see everything the text takes for granted
The function will emerge from this analysis, not be imposed upon it
Prevents jumping to conclusions before the groundwork is laid

Step 3: Separate Form from Function

Purpose: Now that Steps 1-2 have done the hard work, we can cleanly distinguish what is culturally/temporally bound from what is morally foundational.

What to do:

Review the presuppositions from Step 2
Categorize each as:
- Form (culturally, temporally, institutionally bound)
- Function (morally foundational, transcending Israel’s particulars)

Output: Two lists derived from Step 2’s comprehensive analysis.

Why this matters:

The separation is now grounded in the prior analysis, not assumed
We can show our work: every function-level assumption traces back to Step 2

Step 4: Remove Expired Categories

Purpose: Identify whether any aspect of the law belongs to categories that have expired with the old covenant.

What to do:

Check whether the law (or elements of it) falls into:
- Sacrificial/ceremonial
- Geographically bound to the land
- Seed-related (preserving the messianic line)
- Typological (fulfilled in Christ)
- Tied to theocratic mechanisms (Urim/Thummim, prophetic oracle)

Output: Identification of any expired elements; confirmation that function remains.

Why this matters:

This is “Clearing the Ground” (Chapter 3) applied to the specific law
Some laws have expired elements mixed with enduring function
Some laws are entirely expired (purely ceremonial)
The function that remains after this step is what we carry forward

Step 4b: Owen’s Formal-Reason Test (Diachronic Precision Tool)

Purpose: Resolve form/function ambiguity on elements that survive Step 4 but remain unclear from synchronic analysis alone.

This step draws directly from John Owen’s hermeneutical principle in his exposition of Hebrews 7:4 (Vol. 5 of his Hebrews commentary). Owen, examining whether multi-epoch practices are perpetually binding, articulated a test of remarkable precision:

“But where not only the subject-matter, but the formal reason of the command is the same, there it is of natural equity, and unalterable.”

The subject-matter is the what – the practice or duty in question. The formal reason is the why – the underlying rationale for the command. Owen’s insight is that mere continuity of practice across redemptive-historical epochs does not prove moral permanence. The reason must also be constant.

When Step 4b is triggered. This sub-step applies when ALL THREE of the following conditions are met:

The practice or specific element survives the Step 4 checklist (it is not obviously ceremonial, geographic, seed-related, typological, or theocratic)
The interpreter is uncertain whether a specific element is form or function (Step 3 produced ambiguity on this element)
The practice has attestation outside the Mosaic epoch (pre-Mosaic, post-Mosaic, or both)

If any condition is not met, skip Step 4b and proceed directly to Step 5. Most laws will not trigger this step, and that is by design. The philonomic method’s synchronic analysis (Steps 1-4) is sufficient for the majority of case laws. Step 4b exists for the genuinely hard cases – laws where the form/function boundary is debatable and diachronic evidence is available to resolve the debate.

The test procedure. When triggered, the interpreter asks:

Does this practice appear in multiple redemptive-historical epochs (pre-Mosaic, Mosaic, post-Mosaic)?
Is the formal reason – the underlying rationale, the why – identical in each epoch?
If both the subject-matter and the formal reason are the same in every epoch, the element is function (morally permanent in its specific form). Owen calls this “of natural equity, and unalterable.”
If the subject-matter persists but the formal reason varies across epochs, the moral substance persists but the specific form does not.

Output: A determination of whether the ambiguous element is form or function, based on diachronic tracking of the formal reason.

The relationship to the base method. Steps 1-4 constitute the synchronic base method: they analyze the law as given within the Torah, surface its presuppositions, separate form from function, and remove expired categories. This is the universal method – it can be applied to any Mosaic law, whether or not diachronic evidence exists. Step 4b adds a diachronic precision instrument for resolving ambiguity when synchronic analysis alone is under-determined. It is not a patch for a broken method. It is a fine-toothed comb where Step 4’s coarse filter has already done its work.

The relationship between the two is one of complementarity, not competition. The synchronic method has universal scope (it works on every law). The diachronic test has limited scope but higher resolution where it applies. Owen covers philonomy’s weakness on ambiguous multi-epoch practices; philonomy covers Owen’s weakness on laws with clear moral logic but limited diachronic attestation. Together, they produce a hermeneutical framework that, to our knowledge, is without equal in the Reformed tradition for rigor, reproducibility, and fidelity to the text of Scripture.

When Step 4b is NOT needed. For laws where the form/function distinction is clear from synchronic analysis alone, Step 4b adds nothing and should be skipped. Deuteronomy 25:4 is one such case: no one seriously disputes that the ox, the muzzle, and the threshing floor are form, while fair compensation for labor is function. The bestiality prohibition is another: creation-grounding, the image of God, and the word tevel (“confusion”) establish the moral logic so clearly that diachronic comparison is unnecessary. The test is designed for the hard cases, not the easy ones.

Step 5: Find Commandment Domain

Purpose: Identify which domain of the Decalogue the law addresses.

The Ten Domains:

Cmd	Domain	Scope
1st	Ultimate Authority	Who/what has final claim on allegiance
2nd	Worship Form	How the true God is to be worshiped
3rd	Sacred Speech	Use of God’s name, oaths, vows
4th	Appointed Times/Places	Sacred rhythms and spaces for worship
5th	Human Authority	Honor for parents and lawful authorities
6th	Life and Person	Life, injury, protection of persons
7th	Marriage and Sexuality	Marriage, sexual boundaries
8th	Property Rights	Ownership, theft, labor, restitution
9th	Trial and Due Process	Witness, testimony, judicial integrity
10th	Heart and Contentment	Coveting, envy, discontent

What to do:

Based on the function identified in Step 3, determine which domain applies
This is broader than the specific commandment; it identifies the sphere of moral concern

Output: The commandment domain (1st through 10th).

Step 6: Map to Commandment

Purpose: Specifically identify the commandment(s) the law expounds.

What to do:

Identify the primary commandment the law addresses
Note any secondary commandments it touches
Verify that the mapping coheres with the function identified

Output: Primary commandment mapping, plus any secondary mappings.

Why this matters:

The Decalogue is the organizing structure of the moral law
Case laws are expositions of the Ten Commandments
If you cannot identify which commandment a law expounds, you have not understood its function

Step 7: Explain How Case Elaborates Commandment’s Domain

Purpose: Articulate how this specific case law illuminates the commandment it expounds.

What to do:

Explain what the case law teaches about the commandment
What aspect of the commandment does it clarify?
What application does it demonstrate?
What would we not understand about the commandment without this case law?

Output: A clear explanation of the law’s contribution to understanding the commandment.

Summary Statement Template:

This law expounds the _____ Commandment by teaching that _____, through a form bound to _____, while its enduring equity requires _____ for a just society.

Worked Example 1: Deuteronomy 25:4 (The Muzzled Ox)

This example is fully developed in Chapter 6 and demonstrates the philonomic method with a law that Paul explicitly cites. Here we work through the full seven-step process with exhaustive presuppositional analysis.

“You shall not muzzle an ox when it treads out the grain.” (Deuteronomy 25:4)

Discourse context: Deuteronomy 25:4 sits within a cluster of laws (25:1-10) unified by the theme of restraint on the powerful — limiting judicial punishment (vv. 1-3), preventing exploitation of labor (v. 4), and requiring familial provision for the vulnerable (vv. 5-10). This context strengthens the presuppositional analysis by showing that the law’s moral logic addresses power asymmetry generally, not agricultural practice specifically.

Step 1: Wooden Literalism (List All Elements That Cannot Transfer)

Oxen: Specific animal used in ancient Near Eastern agriculture; most modern economies do not use oxen for labor
Treading out grain: Specific threshing method where animals walk on harvested grain to separate kernels from husks; modern threshing is mechanized
Agricultural economy: Assumes a society where grain production is central and animal labor is the norm
Muzzle: Physical restraint device for animal mouths; assumes the practice of muzzling was common enough to require prohibition

Output: This law is embedded in an agricultural context with animal-powered threshing. The specific elements (ox, muzzle, treading grain) cannot transfer directly to modern economies.

Step 2: Presuppositions (Surface All Assumptions Exhaustively)

Existence/Ontology

Humans exist
Oxen exist
Grain exists
Muzzles exist (a technology for restraining animal mouths)

Authority/Obligation

God exists
God speaks to humans
God has authority to command
God’s commands are binding
God is just
This command is just
Humans are the addressees of divine commands (not oxen)
Humans are morally accountable for how they treat oxen

Relationships/Hierarchy

Humans have authority over oxen
Humans own oxen (or have use of them)
Humans direct the work of oxen
Oxen do not direct their own labor
Oxen cannot advocate for themselves
Oxen are dependent on human decisions

The Work

Grain must be processed (threshed) after harvest
Treading is a method of threshing
Oxen can tread grain
Treading grain is labor
Oxen exert effort when treading
This effort benefits the human owner
The output (threshed grain) has value
The human receives/owns the output

The Ox’s Nature/Needs

Oxen are living creatures
Oxen require food to survive
Oxen require food to continue working
Oxen experience hunger
Oxen will naturally eat available grain
Oxen eating while working is the natural/default state
Muzzling is an intervention against the natural state

The Muzzling

Muzzling prevents eating
Muzzling is a deliberate human choice
Muzzling requires effort/intention
The purpose of muzzling is to preserve more grain for the human
Muzzling does not stop the ox from working
Muzzling allows the human to extract labor while withholding benefit
The ox continues to expend effort while muzzled
The ox continues to produce value while muzzled
The ox is denied participation in what it helps produce

Value/Worth

Humans are valuable
Oxen are valuable
Humans are more valuable than oxen in God’s sight
God cares about oxen
God cares about humans
God cares more about humans than oxen
If God commands justice for oxen, He certainly requires justice for humans
What is owed to an ox is at minimum owed to a human
The standard for treating oxen sets a floor, not a ceiling, for treating humans

Image-Bearing (Implicit)

Humans are made in God’s image
Oxen are not made in God’s image
Yet oxen still warrant just treatment
The command protects a creature without the image of God
How much more must we protect creatures with the image of God
The dignity of the ox derives from God’s care, not from the ox’s nature
The dignity of the human derives from both God’s care and the image

Categories of Laborer

Oxen labor for humans
Humans labor for other humans
If oxen deserve to eat from their labor, humans certainly do
The ox cannot understand the injustice done to it
The human can understand, making the injustice against humans even more grievous
The ox has no covenant standing
The human (in Israel) has covenant standing, making exploitation of human laborers a covenant violation

What This Reveals About the Lawgiver

God notices how we treat those “beneath” us
God legislates on behalf of those who cannot legislate for themselves
God’s justice extends beyond human-to-human relations
God’s concern for oxen reveals His character
A God who protects oxen will certainly protect humans
The command reveals God’s heart, not just a rule

Implicit Moral Logic

There is something wrong with muzzling (else why prohibit it?)
The wrong is serious enough for God to address it
The ox has some kind of claim that muzzling violates
This claim arises from the ox’s participation in the labor
Preventing the ox from eating while it works is the specific wrong
The wrong is not “ox goes hungry” generically; it is “ox goes hungry while doing the very work that produces the food”
The temporal clause “when it treads out the grain” is load-bearing: it is the conjunction of labor and deprivation that constitutes the injustice; remove the temporal condition (muzzle an ox that is not working) and the moral force changes entirely

The Human Condition

The prohibition assumes the human would be tempted to muzzle (else why command against it?)
Humans are prone to maximize their own benefit at the expense of those under their authority
The ox’s inability to protest does not diminish the human’s obligation
Justice applies even when the aggrieved party cannot demand it

Property and Entitlement

The grain belongs to the human (not the ox), so the ox eating is not “taking its own” but receiving from the owner’s goods
Yet the ox should receive, so ownership does not mean absolute withholding rights
The human’s property rights over the grain are limited by the ox’s labor-claim
There is a kind of “natural wage” or “natural due” embedded in the work itself

Redemptive-Historical Context

The command is given to Israel, a redeemed people
Those redeemed by God should reflect God’s character in how they treat dependents
Israel was once in bondage (Egypt); they know what exploitation feels like
“You were slaves in Egypt” reasoning may undergird this (see Deuteronomy’s repeated appeal to Egypt memory)

Existential/Experiential Dimension

The ox experiences hunger while working
The ox sees, smells, and is surrounded by grain it cannot eat
The ox experiences the muzzle as a physical restraint preventing natural behavior
The ox cannot understand why it is being denied
The ox cannot protest, complain, or advocate for itself
The muzzling inflicts experienced suffering, not merely abstract deprivation
God cares about creaturely experience, not only moral principle in the abstract
The human who muzzles may harden his heart through the repeated act of exploitation
The human who refuses to muzzle cultivates a generous, just, and compassionate disposition
If God cares about an ox’s experience of injustice, how much more does He care about a human laborer’s experience? (This sets up the qal wahomer argument Paul will make)

Step 3: Separate Form from Function

Form (Culturally/Temporally Bound)

Oxen as the specific animal
Treading as the specific threshing method
Muzzles as the specific restraint device
Agricultural economy as the economic context
Grain as the specific product

Function (Morally Foundational)

Those who labor are entitled to share in the fruit of their labor
It is unjust to extract work while preventing the worker from benefiting
The powerful must not exploit the powerless
God cares about just treatment of laborers
What is owed to animals is at minimum owed to humans
Ownership does not grant absolute withholding rights over those who work for you
Justice applies even when the aggrieved party cannot demand it
The laborer’s claim arises from participation in the work itself

Step 4: Remove Expired Categories

Sacrificial/ceremonial? No
Geographically bound? No (grain threshing was universal in agrarian societies)
Seed-related? No
Typological? No
Tied to theocratic mechanisms? No

Result: Nothing to remove. The form is technologically/economically bound (Step 1), but there are no expired covenantal categories. The function stands.

Step 5: Find Commandment Domain

The function concerns: withholding what is due to one who labors for your benefit

This is the domain of Property Rights (8th Commandment).

The ox’s labor produces value; the owner benefits from that value; preventing the ox from eating is taking the benefit of labor while withholding what is naturally due. This is theft by deprivation.

Domain: 8th Commandment (Property Rights)

Step 6: Map to Commandment

Primary: 8th Commandment (“You shall not steal”)

Stealing includes not only taking what belongs to another, but withholding what is owed
The laborer (even an animal) has a rightful claim to share in the produce of their work
Muzzling is theft-by-withholding

Secondary:

10th Commandment (coveting): The muzzler covets the grain so much he denies the ox its share
6th Commandment (life/wellbeing): Denying sustenance to a working animal harms its life and wellbeing

Step 7: Explain How Case Elaborates Commandment’s Domain

The Eighth Commandment prohibits theft. But what constitutes theft? This case law teaches that theft includes:

Withholding, not just taking: You can steal by preventing someone from receiving what they are due, not only by actively seizing their property
Labor creates entitlement: The one who works has a claim on the fruit of that work; this is not charity but justice
The lesser-to-greater argument: If even an ox has this entitlement, how much more a human laborer? Paul makes this explicit in 1 Corinthians 9:9-10
Exploitation through position: The ox cannot advocate for itself; the owner has power to muzzle. This teaches that those with power over laborers must not exploit that power to deprive them
Ownership is not absolute: The human owns the grain, but the ox’s labor-claim limits the owner’s right to withhold. Property rights do not override justice claims arising from labor.

Summary Statement:

This law expounds the Eighth Commandment by teaching that theft includes withholding from laborers their rightful share of the fruit of their work, through a form bound to animal-powered agricultural threshing, while its enduring equity requires that all who labor (human or animal) receive fair participation in the value they help produce.

Worked Example 2: Exodus 22:1-4 (Restitution for Theft)

This second example demonstrates the philonomic method with a different category of case law (one governing restitution rather than labor relations) and maps to the same commandment through different reasoning.

“If a man steals an ox or a sheep, and kills it or sells it, he shall repay five oxen for an ox, and four sheep for a sheep. If a thief is found breaking in and is struck so that he dies, there shall be no bloodguilt for him, but if the sun has risen on him, there shall be bloodguilt for him. He shall surely pay. If he has nothing, then he shall be sold for his theft. If the stolen beast is found alive in his possession, whether it is an ox or a donkey or a sheep, he shall pay double.” (Exodus 22:1-4)

Step 1: Wooden Literalism (List All Elements That Cannot Transfer)

Oxen, sheep, donkeys: Specific livestock in ancient Israelite economy; many modern thefts involve different property
Five-fold/four-fold/double restitution: Specific multipliers tied to Israel’s economic context and relative values of animals
Sold for his theft: Debt-bondage system as remedy when thief cannot pay; not available in modern legal systems
Breaking in at night: Assumes certain building structures and self-defense contexts
No bloodguilt / bloodguilt distinction based on sunrise: Tied to Israel’s specific judicial framework for homicide

Output: The specific animals, restitution amounts, and sale into servitude are form-bound. The day/night distinction for self-defense assumes a particular legal and architectural context.

Step 2: Presuppositions (Surface All Assumptions Exhaustively)

Existence/Ontology

Humans exist
Property exists and can be owned
Livestock (oxen, sheep, donkeys) exist and have value
Houses exist and can be “broken into”
Nighttime and daytime are distinct periods with different visibility

Authority/Obligation

God exists and has authority to legislate
Property rights are real and legitimate
Theft is a violation of something real, not merely a social convention
Restitution can be compelled (there is judicial authority)
The community has authority to impose penalties

Relationships/Property

Property can be owned by individuals
Ownership creates legitimate expectations of use and control
The owner has a right to retain what is his
The thief violates a real right, not merely a preference

The Theft

Theft is the taking of another’s property without permission
Theft is wrong (else why require restitution?)
Theft harms the victim
The harm is not merely economic but involves violation, risk, and loss
The victim suffers not only the loss of property but anxiety, disruption, and insecurity

The Restitution

Mere return of stolen goods is insufficient (else why add penalty?)
Justice requires more than making the victim “whole” in the minimal sense
The penalty must exceed the value taken to serve justice
Different circumstances warrant different penalties (5x, 4x, 2x)
If goods are recovered, less restitution is required than if goods are gone
The difference in penalty reflects the degree of harm and difficulty of remedy

The Self-Defense Provision

Breaking into a house creates danger to the occupants
The homeowner has a right to protect himself, family, and property
Killing an intruder in the darkness (when intent is unclear) creates no bloodguilt
Killing an intruder in daylight (when alternatives exist) does create bloodguilt
The law protects both the homeowner’s right to defend and limits on lethal force
Circumstances matter for moral culpability

If the Thief Cannot Pay

Inability to pay does not eliminate the obligation
The thief’s labor has value that can satisfy the debt
Servitude is a form of working off the debt: the thief “pays” with labor
This is remedial, not merely punitive
Even destitute thieves must make restitution somehow

Justice Principles

The victim matters; restitution goes to the victim, not merely to “society”
Theft creates a debt to the person harmed
Penalties are graduated based on circumstances
Complete loss (killed/sold) warrants higher penalty than recovery
Justice is proportionate, not arbitrary

What This Reveals About the Lawgiver

God cares about property rights
God cares about victims receiving remedy
God distinguishes degrees of culpability
God’s justice is proportionate
God provides for the destitute thief (servitude rather than imprisonment or death)
God protects the homeowner’s right to self-defense while limiting excessive force

Step 3: Separate Form from Function

Form (Culturally/Temporally Bound)

Specific animals (ox, sheep, donkey)
Specific multipliers (5x, 4x, 2x)
Sale into servitude as remedy for inability to pay
Night/day distinction tied to specific architectural and legal context

Function (Morally Foundational)

Theft requires restitution, not merely punishment
Restitution must exceed mere return of stolen goods
The victim is owed compensation, not just “society”
Penalties should be proportionate to the degree of harm
Complete, irreversible theft warrants higher penalty than recoverable theft
Homeowners may defend against intruders, but lethal force has limits
Circumstances (visibility, alternatives available) affect the morality of defensive action
Even those who cannot pay must make restitution through their labor

Step 4: Remove Expired Categories

Sacrificial/ceremonial? No
Geographically bound? No (theft exists everywhere)
Seed-related? No
Typological? The provision for the thief who cannot pay to be “sold for his theft” anticipates, in shadow form, the bondage that sin brings and the redemption price required for freedom. Yet this typological connection is secondary; the law’s primary function is civil justice.
Tied to theocratic mechanisms? No

Result: The typological dimension is minor and secondary. The function stands essentially intact.

Step 5: Find Commandment Domain

The function concerns: theft of property and the just remedy for it

This is the domain of Property Rights (8th Commandment).

Domain: 8th Commandment (Property Rights)

Step 6: Map to Commandment

Primary: 8th Commandment (“You shall not steal”)

The connection is explicit and structural
This law does not merely prohibit theft; it specifies the remedy for theft
It teaches us what the Eighth Commandment requires when it is violated

Secondary:

6th Commandment (life/preservation): The self-defense provision addresses when lethal force is justified to protect life and property

Notice how this differs from Deuteronomy 25:4. Both expound the Eighth Commandment, but through different angles:

Deuteronomy 25:4 addresses theft by withholding (exploitation of laborers)
Exodus 22:1-4 addresses theft by taking (stealing property) and its remedy

This demonstrates that case laws illuminate the commandments from multiple directions.

Step 7: Explain How Case Elaborates Commandment’s Domain

The Eighth Commandment prohibits theft. But what does justice require when theft occurs? This case law teaches:

Restitution, not mere punishment: The primary aim of justice in theft is to make the victim whole. The thief owes something to the person he wronged, not merely to “society” in the abstract.
Penalty proportionate to harm: The thief pays more than he took. Simple return would make theft a risk-free proposition: if caught, you give it back; if not caught, you keep it. The penalty creates genuine deterrence while remaining proportionate.
Graduated severity based on circumstances: Killing or selling the stolen animal makes restitution harder and demonstrates greater commitment to the crime. The law responds with greater penalty. Recovery of the animal allows lower penalty because harm is less.
Victim-centered justice: The payments go to the victim, not to the state. The one who suffered loss receives compensation. This is the heart of restitutionary justice.
The right of self-defense has limits: The homeowner may defend against a nighttime intruder without bloodguilt, but killing someone in daylight when alternatives exist crosses a moral line.

Summary Statement:

This law expounds the Eighth Commandment by teaching that theft requires proportionate restitution to the victim, with severity graduated according to circumstances, through a form bound to ancient Near Eastern agricultural economy with specific livestock and servitude provisions, while its enduring equity requires restitution exceeding mere return of stolen goods to compensate victims and deter theft for a just society.

Worked Example 3: Tithing (Demonstrating Step 4b’s Necessity)

This third example demonstrates the enhanced method on a genuinely hard case – one where Step 4b is needed to resolve an ambiguity that the synchronic method alone cannot adjudicate. Tithing is the law that tested the method and revealed its need for Owen’s precision tool.

“Every tithe of the land, whether of the seed of the land or of the fruit of the trees, is the LORD’s; it is holy to the LORD.” (Leviticus 27:30)

“To the Levites I have given every tithe in Israel for an inheritance, in return for their service that they do, their service in the tent of meeting.” (Numbers 18:21)

“You shall tithe all the yield of your seed that comes from the field year by year. And before the LORD your God, in the place that he will choose, to make his name dwell there, you shall eat the tithe of your grain, of your wine, and of your oil, and the firstborn of your herd and flock, that you may learn to fear the LORD your God always.” (Deuteronomy 14:22-23)

Step 1: Wooden Literalism (List All Elements That Cannot Transfer)

The tithing laws are deeply embedded in Israel’s particular institutional life:

Levitical priesthood as recipient: “To the Levites I have given every tithe” – the primary recipients are a specific tribe with a specific function that has been fulfilled in Christ (Heb. 7:11-12)
Central sanctuary: “In the place that he will choose, to make his name dwell there” – a geographic specification tied to the land promise, later Jerusalem
Agricultural commodities: “The seed of the land or of the fruit of the trees” – assumes an agrarian economy where land-produce is the primary form of wealth
Triennial cycle: “At the end of every three years you shall bring out all the tithe of your produce in that year and lay it up within your towns. And the Levite… and the sojourner, the fatherless, and the widow, who are within your towns, shall come and eat and be filled” (Deut. 14:28-29) – a local, individual distribution: the Israelite stores the tithe in his own town and the vulnerable come to him there
Animal counting procedure: “Every tenth animal of all that pass under the herdsman’s staff” (Lev. 27:32) – a specific cultic procedure for selecting the animal tithe
Festival consumption: The second tithe consumed by the worshiper at the central sanctuary as a communal meal
Monetary conversion for distance: “If the way is too long for you… then you shall turn it into money” (Deut. 14:24-25) – a provision assuming pilgrimage
Purity regulations: “I have not eaten of the tithe while I was mourning, or removed any of it while I was unclean, or offered any of it to the dead” (Deut. 26:14) – tied to the Levitical holiness system
Confession formula: The specific declaration spoken at the central sanctuary (Deut. 26:13-15)
Tithe of the tithe: The Levites themselves tithe their tithe to Aaron the priest (Num. 18:26-28) – a hierarchical structure within the Levitical system

Output: The tithing laws are woven into the Levitical priesthood, central sanctuary, tribal land inheritance system, agricultural economy, specific cultic procedures, and the triennial cycle. The specific mechanism and institutional apparatus belong to a covenantal arrangement that has expired.

Step 2: Presuppositions (Surface All Assumptions Exhaustively)

Authority/Obligation

God exists and has authority to command
God owns all things – “every tithe of the land… is the LORD’s” presupposes that all increase ultimately belongs to God
God has a rightful claim on a portion of what He has given
Humans are stewards, not ultimate owners, of their increase
God’s commands about material provision are just and binding

Relationships/Hierarchy

God is the source of all provision – the land yields because God grants it
Israel owes its prosperity to God’s covenantal blessing
Those who serve God’s people in worship deserve material support
The Levites’ service has value that warrants dedicated provision
Each individual Israelite bears personal, local responsibility for the vulnerable in his town (sojourner, fatherless, widow) – the tithe is stored “within your towns” and distributed by the householder, not collected and redistributed by a central authority

The Work/Activity

Agricultural labor produces increase
Increase is not self-generated; it depends on God’s blessing (rain, fertility, protection)
The increase has value
A portion of value produced should be returned to God
The return is proportional to increase – you tithe “all the yield”

Value/Worth

God values worship – the tithe funds the worship apparatus
God values His ministers – the tithe supports those who labor in sacred service
God values the vulnerable – the third-year tithe requires each Israelite to provide personally for the poor in his own locality
Proportional giving reflects proportional blessing
The tithe is “holy to the LORD” – setting apart a portion acknowledges God’s lordship over all

Implicit Moral Logic

Acknowledgment: The one who receives increase owes acknowledgment to the One who gave it
Proportionality: The acknowledgment should bear a proportional relationship to the increase
Support of ministry: Those who serve God and His people full-time deserve material provision from the community they serve
Care for the vulnerable: Those who receive increase from God bear personal responsibility to provide for the vulnerable among them from that increase
Regularity: Giving should be systematic, not haphazard – “year by year” indicates a rhythm
Generosity as worship: The festival context (eating the tithe “before the LORD” with rejoicing) assumes that giving shapes the heart, not merely the pocketbook

What This Reveals About the Lawgiver

God does not need our goods (He owns all things), but He requires acknowledgment of His lordship over our increase
God designs systems where worship, ministry support, and care for the poor are integrated
God’s requirements are proportional, not arbitrary
God is concerned not merely with the act of giving but with the heart of the giver

Existential/Experiential Dimension

The worshiper who gives regularly cultivates a heart of gratitude and dependence on God
The worshiper who withholds cultivates a spirit of self-sufficiency and greed
The Levite who receives is freed to devote himself to service without economic anxiety
The widow, orphan, and sojourner who receive the third-year tithe experience God’s care mediated through their neighbor’s personal provision – the tithe is stored locally (“within your towns”) and the vulnerable come to the householder who set it aside, not to a centralized distribution point
The festival meal creates communal joy and shared worship – the giver does not merely transfer wealth but participates in worship

Step 3: Separate Form from Function

Form (Culturally/Temporally/Institutionally Bound)

The designation of the Levites as recipients
The central sanctuary as the location for consumption
The triennial cycle for the poor-tithe
The agricultural commodities (grain, wine, oil, livestock)
The counting procedure (passing under the staff)
The purity regulations attached to tithe consumption
The confession formula of Deuteronomy 26
The pilgrimage-festival context
The monetary conversion provision for long-distance travel

Function (Morally Foundational)

Those who receive increase from God owe a portion back to Him – not because God needs it, but because acknowledgment of His lordship over all provision is a moral duty
The portion should be proportional to the increase
Those who labor in ministry deserve material support from the community they serve
Those who prosper bear personal obligation to provide for the vulnerable from their increase
Giving should be regular and systematic, not sporadic
Giving is an act of worship that shapes the heart

The Ambiguous Element: Is the Precise Proportion (One-Tenth) Form or Function?

Here the method encounters genuine difficulty. The specific fraction – one-tenth – could plausibly be classified either way:

If it is form, then “one-tenth” is an Israelite specification analogous to “five oxen for an ox” in the restitution law. The function is proportional giving; the specific percentage is the particular institutional expression. This yields: generous proportional giving is morally required; the precise tenth is not binding.
If it is function, then the tenth reveals something about what God considers a just minimum acknowledgment of His ownership – part of the moral furniture, not merely the institutional arrangement. This yields: the ten-percent minimum is a permanently binding moral standard.

Both readings are internally consistent with the steps we have followed so far. The synchronic analysis alone does not adjudicate between them. This is precisely the kind of ambiguity Step 4b was designed to resolve.

Step 4: Remove Expired Categories

Sacrificial/ceremonial? Partially. The tithe is designated qodesh (“holy to the LORD”) and is integrated with the Levitical worship system. The Levitical priesthood has been fulfilled in Christ (Heb. 7:11-12). The central sanctuary has been replaced by worship “in spirit and truth” (John 4:23-24).
Geographically bound? Yes. “The place that he will choose to make his name dwell there” is a geographic specification tied to the land promise.
Seed-related? No.
Typological? Partially. The Levitical system that the tithe funds is typological, pointing to Christ’s priesthood. The tithe as supporting the Levitical order is typological; the tithe as acknowledging God’s lordship over increase is not.
Tied to theocratic mechanisms? Yes. The tithe functioned as a form of national taxation in the theocracy, funding worship through the Levitical system. (Note: the third-year tithe for the vulnerable was not centrally administered – it was stored and distributed locally by individual Israelites “within your towns” [Deut. 14:28-29] – but the overall tithing system was embedded in the theocratic institutional framework.)

Result: Significant expired elements. The Levitical institutional framework, the central sanctuary, the theocratic taxation mechanism, and the specific cultic procedures have all expired. But the function – acknowledging God’s lordship through proportional giving, supporting those who labor in ministry, and personally providing for the vulnerable from one’s own increase – survives the removal of these categories.

However, the ambiguous element – the precise proportion of one-tenth – is not resolved by the Step 4 checklist. The tenth is not obviously ceremonial, not geographic, not seed-related, not typological in itself, and not tied to theocratic mechanisms per se (many cultures have taxed at various rates). The coarse filter of Step 4 does not catch it. We need the fine filter.

Step 4b: Owen’s Formal-Reason Test

Trigger conditions:

Does the element survive Step 4? Yes. The specific proportion (one-tenth) is not removed by any of the expired-category checks.
Is the interpreter uncertain whether this element is form or function? Yes. Step 3 identified the proportion as genuinely ambiguous.
Does the practice have attestation outside the Mosaic epoch? Yes. Abraham tithed to Melchizedek (Gen. 14:18-20). Jacob vowed a tenth (Gen. 28:22). The New Testament addresses giving extensively (1 Cor. 9:7-14; 16:2; 2 Cor. 8-9).

All three conditions are met. Step 4b is triggered.

Applying Owen’s test: tracking the formal reason for the specific tenth across epochs.

Epoch	Practice	Formal Reason for the Specific Tenth
Abraham (Gen. 14:18-20)	Voluntary gift of one-tenth of the spoils of war to Melchizedek	Spontaneous thanksgiving to God’s priest-king. Not from regular income. Not under obligation. Owen observes: he gave “only the tenth of the spoils, which were not tithable by law.”
Jacob (Gen. 28:22)	Conditional vow: “of all that you give me I will give a full tenth to you”	A voluntary promise contingent on God’s blessing. Owen argues this proves the tenth was not already required by law: “For had it been so, it could not have been the matter of an extraordinary vow.”
Mosaic Law (Lev. 27; Num. 18; Deut. 14)	Mandatory tenth of all produce, directed to Levites, consumed at the central sanctuary, with third-year tithe stored locally for the vulnerable	Institutional support for the Levitical system and the central sanctuary; personal, local provision for the poor (“within your towns”). A legal obligation embedded in the national covenant.
Apostolic Teaching (1 Cor. 16:2; 2 Cor. 8-9)	Proportional, cheerful, regular giving without specified fraction	Acknowledge God’s lordship, support gospel ministry, care for the poor. Paul conspicuously does not appeal to the tithing percentage. He argues from “the light of nature, the general equity of other cases, the analogy of legal institutions, the rules of justice, with the especial institution of Christ in the gospel” (Owen’s summary of Paul’s reasoning).

Result: The subject-matter persists across all epochs – giving a portion of one’s increase to God. But the formal reason for the specific tenth varies dramatically:

Before the law: voluntary thanksgiving from spoils
Under the law: mandatory institutional support for the Levitical system
After the law: proportional cheerful giving with no specified fraction

The formal reason is not constant. Therefore, by Owen’s test, the specific proportion (one-tenth) is not “of natural equity, and unalterable.” It is form – the Mosaic institution’s particular expression of a moral duty.

But the formal reason for giving itself – acknowledging God’s lordship over provision, supporting those who labor in ministry, caring for the vulnerable – remains identical in every epoch. The duty to give is function. It is morally permanent.

Owen himself reached exactly this conclusion: “It is with me past all doubt and question that a bountiful part of our enjoyments is to be separated unto the use and service of the worship of God, particularly unto the comfortable and honourable supportment of them that labour in the ministry.”

Step 5: Find Commandment Domain

The function concerns: acknowledging God’s ultimate ownership over all increase by returning a portion to Him, and providing for those who serve Him and those who are vulnerable.

This maps to the domain of Ultimate Authority (1st Commandment). “You shall have no other gods before me” (Exod. 20:3). The first commandment addresses who has the ultimate claim on your allegiance, your resources, your life. The refusal to give back to God from one’s increase is functionally a denial of His lordship over that increase – treating oneself as the ultimate owner, which is a species of idolatry.

Domain: 1st Commandment (Ultimate Authority)

Step 6: Map to Commandment

Primary: 1st Commandment (“You shall have no other gods before me”)

God’s claim on a portion of our increase is an expression of His claim on all of our lives
To withhold giving is to deny, practically, that He is Lord over our material provision
Regular proportional giving is the economic expression of the first commandment

Secondary:

8th Commandment (Property Rights): Withholding what is owed to God, to ministers, and to the poor is theft. Malachi 3:8 makes this explicit: “Will man rob God? Yet you are robbing me… in your tithes and contributions.”
5th Commandment (Authority): Supporting those whom God has placed in spiritual authority over us reflects the honor due to legitimate authority (1 Tim. 5:17-18; Gal. 6:6)

Step 7: Explain How Case Elaborates Commandment’s Domain

The first commandment declares that God alone has the ultimate claim on our allegiance. But what does this look like in the realm of economics and material provision? The tithing laws teach:

God owns all increase. “The earth is the LORD’s and the fullness thereof” (Ps. 24:1). The tithe is not a gift we initiate but a return of what already belongs to Him. The laws presuppose that human prosperity is derived, not autonomous.
Acknowledging God’s ownership requires concrete, regular, proportional action. It is not enough to believe abstractly that God is Lord. The first commandment demands practice, and in the economic sphere, that practice takes the form of giving back from one’s increase. The regularity (“year by year”) and proportionality (“of all the yield”) prevent giving from becoming sporadic or token.
Ministry must be materially supported. Those who serve God and His people full-time cannot simultaneously labor for their own provision. The community that benefits from their service bears responsibility for their support. Paul makes exactly this argument in 1 Corinthians 9:7-14, reasoning from the Mosaic pattern – though notably not from the specific tithe percentage.
The vulnerable must be provided for personally and locally. God’s lordship extends to how we treat those in His image who cannot provide for themselves. The third-year tithe is striking in its mechanism: it is not collected centrally and redistributed by priests or elders, but stored by the individual Israelite “within your towns” (Deut. 14:28), where the Levite, the sojourner, the fatherless, and the widow “shall come and eat and be filled” (Deut. 14:29). The presupposition is personal, neighbor-to-neighbor responsibility – God’s people bear direct obligation to provide for the vulnerable from their own increase.
Giving is worship. The festival context, the communal meal, the confession formula – all indicate that economic giving is not merely financial transfer but an act of worship that shapes the heart.

Summary Statement:

This law expounds the First Commandment by teaching that God’s lordship over all provision requires regular, proportional, worshipful giving that supports ministry and cares for the vulnerable, through a form bound to the Levitical priesthood, the central sanctuary, agricultural economy, and the theocratic institutional structure, while its enduring equity requires that all who receive increase from God acknowledge His ownership through systematic, proportional giving that supports gospel ministry and personally provides for the poor from one’s own increase.

Concluding Note on Step 4b: This is the case where Step 4b proves its worth. Without it, the method reaches the right conclusion in competent hands – but it cannot demonstrate why the proportion is form rather than function. Two careful interpreters could follow the same seven steps and reach opposite conclusions on whether the specific tenth is binding. With Step 4b, the reasoning is traceable and reproducible: track the formal reason across epochs; if it varies, the specific form is not morally permanent. The tithing case shows that the diachronic precision tool is not decorative – it is load-bearing.

Worked Example 4: Bestiality (Demonstrating the Method’s Self-Sufficiency)

This fourth example demonstrates the method working without Step 4b on a creation-grounded law where the synchronic analysis is entirely self-sufficient. If the tithing example shows where Step 4b is needed, the bestiality prohibition shows where it is not – and this is just as important. A precision tool that is always needed would be a structural dependency, not an enhancement.

“And you shall not lie with any animal and so make yourself unclean with it, neither shall any woman give herself to an animal to lie with it: it is tevel [confusion, perversion].” (Leviticus 18:23)

“If a man lies with an animal, he shall surely be put to death, and you shall kill the animal. If a woman approaches any animal and lies with it, you shall kill the woman and the animal; they shall surely be put to death; their blood is upon them.” (Leviticus 20:15-16)

“Whoever lies with an animal shall be put to death.” (Exodus 22:19)

“Cursed be anyone who lies with any kind of animal.” (Deuteronomy 27:21)

Gary North famously identified this prohibition as the decisive test case for any hermeneutic of the Mosaic law. There is no New Testament restatement. No apostle names the act. No epistle warns against it. If your method requires New Testament citation to establish moral permanence, bestiality exposes the gap. The philonomic method does not have this problem.

Step 1: Wooden Literalism (List All Elements That Cannot Transfer)

The bestiality prohibitions are remarkably free of culturally bounded elements:

No geographic specificity. The prohibition is not tied to the land of Canaan or to specific cities.
No institutional dependencies. It does not require a high priest, Levitical courts, or theocratic mechanisms for its moral content to be understood.
No agricultural or technological context. Unlike the muzzled ox or the parapet law, there is no form here that belongs to a particular era of technology or economy.
No economic structure. The prohibition does not presuppose specific livestock values, land allotments, or commercial arrangements.
Covenant-specific penalty administration. The death penalty prescribed in Leviticus 20:15-16 was administered through Israel’s judicial system. The specific mode of execution and judicial process are form-bound. The moral judgment that warrants severe penalty is not.

Output: The form-bound elements are minimal. The prohibition concerns an act, not a social arrangement. The only elements that cannot transfer directly are the specific penalty administration and the covenantal-judicial context. The act prohibited is universally intelligible and universally possible in every human society.

Step 2: Presuppositions (Surface All Assumptions Exhaustively)

Existence/Ontology

Humans exist as a distinct kind of creature
Animals exist as a distinct kind of creature
Humans and animals are ontologically distinct – different in kind, not merely degree
Sexual relations exist as a category of human action
The distinction between human and animal is not merely functional but essential

Authority/Obligation

God exists and has authority to define the boundaries of sexual conduct
God’s commands about sexuality are binding, not advisory
God has ordered creation with distinctions that must not be violated
Humans are morally accountable for their sexual conduct
Animals are not morally accountable (but are affected – Lev. 20:15 commands the animal also be killed)

The Created Order

God created living things “according to their kinds” (Gen. 1:21, 24-25)
The distinction between human and animal is a creation ordinance, not a Mosaic innovation
Sexual union is designed for creatures of the same kind – specifically, for man and woman within the human kind
Marriage is the divinely ordained context for sexual union (Gen. 2:24)
“The two shall become one flesh” presupposes two of the same flesh – human with human, male with female

The Act Prohibited

Bestiality violates the created distinction between human and animal
The text calls it tevel – “confusion” or “perversion” (Lev. 18:23, 20:12)
The Hebrew word indicates a violation of divinely established categories – a mixing of what God has separated
The act treats a human being as though they were of the same order as an animal, or elevates the animal to the human order
Either direction constitutes a confusion of the creation taxonomy

The Image of God

Humans bear God’s image; animals do not (Gen. 1:26-28)
Sexual union with an animal degrades the image-bearer to the level of the non-image-bearing creature
This is an assault on the imago Dei – on the dignity God has invested in human nature
If God cares about the dignity of the ox (Deut. 25:4), how much more does He care about the dignity of human beings made in His own image?

Moral Logic

The prohibition assumes the act is intrinsically wrong, not merely ceremonially unclean
No qualification is given: no exceptions for circumstance, intent, or consent
The penalty is death – and Owen’s own principle states: “Nor was any thing punished by death judicially in the law but the transgression of some moral command” (Vol. 2, Ex. IV.6)
The death penalty itself is evidence that a moral commandment is being transgressed, not a positive or ceremonial one

What This Reveals About the Lawgiver

God has ordered creation with meaningful distinctions
God intends these distinctions to be respected, not transgressed
God’s concern for sexual purity extends to the most fundamental category boundary in creation: human vs. animal
The severity of the penalty indicates this is not a minor offense but a fundamental violation of created order

Existential/Experiential Dimension

The act corrupts the human who performs it – degrading conscience and disordering affections
The animal is treated as an object of sexual gratification, contrary to its created nature and purpose
The community experiences moral pollution: the act “defiles” not only the individual but the land (Lev. 18:24-25)
The text indicates the animal is also to be destroyed (Lev. 20:15) – not because the animal sinned, but because the creature has been drawn into an act of such profound confusion that the testimony of the act must be removed

Step 3: Separate Form from Function

Form (Culturally/Temporally Bound)

The specific judicial process for investigating and punishing the offense
The death penalty as administered through Israel’s theocratic courts
The destruction of the animal as part of Israel’s purification procedure
The covenantal-national context: Israel as a holy nation set apart, with land-defilement language (Lev. 18:24-28) tied to the theocratic arrangement

Function (Morally Foundational)

Sexual union across the human-animal boundary violates the created order
The image of God in human beings is degraded by sexual congress with animals
The creation taxonomy (“according to their kinds”) establishes boundaries that sexual conduct must respect
The act constitutes tevel – a confusion of divinely established categories
This is intrinsically wrong (not ceremonially wrong), as evidenced by the death penalty
The moral gravity warrants serious civil sanction in any just society
The act corrupts both the individual and the community

Note the remarkable clarity of this separation. There is no ambiguity about which elements are form and which are function. The judicial apparatus is obviously form-bound. The moral wrongness is obviously creation-grounded. The form/function knife cuts cleanly here – which is why Step 4b will not be needed.

Step 4: Remove Expired Categories

Sacrificial/ceremonial? No. There is no sacrifice prescribed. The act is not treated as ritual impurity requiring cleansing but as moral abomination requiring punishment.
Geographically bound? The land-defilement language (Lev. 18:24-28) is partially tied to Israel’s covenantal occupation of Canaan. But God explicitly states that the nations before Israel were being judged for these very sins (Lev. 18:24). The nations had no Mosaic covenant, no land-promise, no theocratic arrangement. Their judgment for bestiality proves the prohibition is grounded in creation, not in the Mosaic institution.
Seed-related? No.
Typological? No. There is no typological fulfillment of the bestiality prohibition in Christ. It does not point forward to anything; it points backward to creation.
Tied to theocratic mechanisms? The penalty administration was tied to the theocracy. The moral judgment is not.

Result: The expired elements are limited to penalty administration and land-theology specific to Israel’s theocratic covenant. The moral substance survives entirely intact.

Step 4b: Not Triggered

The three trigger conditions for Step 4b are:

Does the element survive Step 4? – Not applicable; no ambiguous element exists. The form/function separation is clean.
Is the interpreter uncertain whether a specific element is form or function? – No. The form/function distinction is clear from synchronic analysis alone.
Does the practice have attestation outside the Mosaic epoch? – At best, implicit. Genesis establishes the creation taxonomy and the institution of marriage, from which one may infer the prohibition. But there is no explicit pre-Mosaic command, no narrative addressing the act, and no New Testament citation by name.

Condition 2 alone is sufficient to skip Step 4b. The test is unnecessary because the synchronic method has already produced a determinate result. The moral logic is complete in the Torah itself.

This is significant. It demonstrates that the philonomic method does not depend on Step 4b as a structural necessity. The seven-step synchronic method is the base; Step 4b is the precision supplement. When the base method works cleanly – as it does here – the supplement adds nothing and should be bypassed.

Step 5: Find Commandment Domain

The function concerns: a sexual act that violates the creation boundaries God established for human sexuality.

This is the domain of Marriage and Sexuality (7th Commandment).

“You shall not commit adultery” (Exodus 20:14) guards the covenant of marriage and, by implication, the entire framework of sexual integrity that marriage presupposes. The Seventh Commandment does not merely prohibit extramarital relations between humans; it protects the institution of marriage and the nature of sexual union as God designed it. Marriage is between man and woman (Gen. 2:24); sexual union belongs within that covenant. Bestiality violates the Seventh Commandment not as a species of adultery per se, but as a more fundamental transgression: it attacks the very kind of union that marriage instantiates.

Domain: 7th Commandment (Marriage and Sexuality)

Step 6: Map to Commandment

Primary: 7th Commandment (“You shall not commit adultery”)

The Seventh Commandment protects human sexual integrity within the bounds God established
Bestiality violates the most basic boundary of that integrity: the distinction between human and animal
If adultery (sex outside the covenant of marriage) is prohibited, how much more is sex that renders marriage categorically impossible?
This is qal wahomer reasoning: from the lesser (human-with-wrong-human) to the greater (human-with-non-human)

Secondary:

1st Commandment (Ultimate Authority): Bestiality rejects God’s authority to define the boundaries of creation. It is a form of rebellion against the Creator’s ordering of the world.
6th Commandment (Life and Person): The severity of the penalty (death) indicates an assault on the dignity of human life itself – the image of God is degraded.

On New Testament citation: The New Testament does not explicitly cite the bestiality prohibition. But as the philonomic method affirms: NT citation is confirmatory, not constitutive. The moral logic is complete in the Torah. The mapping to the Seventh Commandment is clear. The presuppositional analysis demonstrates intrinsic moral wrongness grounded in creation. No apostolic restatement is needed for the prohibition to bind the conscience.

Step 7: Explain How Case Elaborates Commandment’s Domain

The Seventh Commandment prohibits adultery. But what is the scope of sexual sin? This case law teaches that the Seventh Commandment guards not merely the marital bond between spouses, but the entire created framework of human sexuality:

The creation taxonomy is inviolable. God created living things “according to their kinds.” Sexual union must respect this boundary. The Seventh Commandment assumes and protects the creation distinction between human and animal.
The image of God imposes unique obligations on human sexual conduct. Because humans bear God’s image, their sexual behavior has moral weight that animal behavior does not. To use an animal sexually is to deny one’s own image-bearing dignity.
The word tevel (“confusion”) identifies the category of sin. This is not a violation of a positive regulation; it is a violation of the created order itself. The law calls it what it is: a fundamental confusion of categories God established.
The death penalty proves the moral character of the offense. Owen himself established the principle: “Nor was any thing punished by death judicially in the law but the transgression of some moral command.” The death penalty for bestiality is Owen’s own evidence that this is a moral, not ceremonial, transgression.
The judgment of the nations confirms universal applicability. Leviticus 18:24-28 explicitly states that the nations who occupied Canaan before Israel were being judged for these sins. They had no Mosaic covenant. They had no written Torah. Yet they were culpable. This means the prohibition is grounded in the law of creation – the moral law written on the heart – not in the Mosaic institution alone.

Summary Statement:

This law expounds the Seventh Commandment by teaching that sexual union must respect the creation boundary between human and animal, and that violation of this boundary constitutes a fundamental assault on the created order and the image of God, through a form bound to Israel’s theocratic judicial administration, while its enduring equity requires that every just society recognize bestiality as a grave moral offense warranting serious civil sanction.

Concluding Note: This is the case where the synchronic method proves its sufficiency. The method does not need diachronic data to condemn bestiality because the creation-grounding is embedded in the text itself. The presuppositional analysis surfaces the moral logic from Genesis 1-2 without requiring the interpreter to trace the prohibition across three epochs. The Torah’s moral logic is complete. NT citation, had it existed, would have been confirmatory – but its absence does not diminish the force of the condemnation one particle. This is what it means to say that binding force comes from the law’s relationship to the Decalogue, not from its reappearance in the epistles.

Counter-Example: Blood-Eating (Demonstrating Step 4b Yielding a “No”)

A precision tool that always says “yes” is not a test – it is a rubber stamp. Step 4b’s credibility depends on its ability to produce a genuine “no” answer: to identify a practice that appears across all epochs yet is not morally permanent in its specific form. The blood-eating prohibition provides exactly this demonstration.

“But flesh with the life thereof, which is the blood thereof, shall ye not eat.” (Genesis 9:4, KJV)

“For the life of the flesh is in the blood, and I have given it for you on the altar to make atonement for your souls, for it is the blood that makes atonement by the life.” (Leviticus 17:11)

“That you abstain from what has been sacrificed to idols, and from blood, and from what has been strangled, and from sexual immorality.” (Acts 15:29)

The blood-eating prohibition appears in all three redemptive-historical epochs. If multi-epoch attestation alone proved moral permanence, blood-eating would be perpetually forbidden in its specific form. Owen demonstrates that it is not – and his reasoning is the formal-reason test in action.

Applying Step 4b directly:

Epoch	Prohibition	Formal Reason
Pre-law (Gen. 9:4)	“Flesh with the life thereof, which is the blood thereof, shall ye not eat”	Prevent the savage custom of consuming raw, warm flesh. Owen: blood is “not absolutely forbidden, but in some cases, and with respect unto a certain end.”
Under the law (Lev. 17:5-14)	Blood is categorically forbidden for consumption	God has reserved blood for sacrificial atonement. “I have given it for you on the altar to make atonement for your souls.” The formal reason is cultic: blood’s significance is tied to the sacrificial system.
After the law (Acts 15:20, 29)	“Abstain from blood”	Temporary accommodation to avoid scandalizing Jewish believers. The Jerusalem Council’s prohibition is pastoral and situational, as Owen argues – it is “only occasionally forbidden for a season, to avoid scandal and offence.”

Result: Same subject-matter. Three different formal reasons. The formal reason is not constant across epochs. Therefore, by Owen’s test, the specific prohibition of blood-eating is not “of natural equity, and unalterable” in its specific form.

This does not mean the blood-prohibition had no moral dimension in each epoch – it had appropriate moral force in each context for its particular reason. But the specific legal form (do not consume blood) does not persist as a permanently binding moral command, because the rationale shifts fundamentally from one epoch to the next.

What this reveals about the method: The blood-eating example proves that Step 4b is falsifiable. It produces genuine discrimination – not every multi-epoch practice is morally permanent. Without this capacity to say “no,” the formal-reason test would be useless. It is precisely because the test can distinguish blood-eating (variable formal reason, therefore not permanent in specific form) from, say, the prohibition of murder (constant formal reason across all epochs) that the test has discriminating power when it says “yes.”

This also demonstrates why diachronic attestation alone is not sufficient. A seven-step analysis of Leviticus 17 without Step 4b might produce contradictory results depending on whether the interpreter emphasizes the “blood is life” presupposition (yielding “permanent moral prohibition”) or the sacrificial-institutional connection (yielding “expired with the ceremonial system”). Step 4b resolves the ambiguity by tracking the formal reason across epochs and finding that it varies. The method is stronger with both tools – synchronic base and diachronic supplement – than with either alone.

Summary Table of Examples

Example	Step 4b Triggered?	Step 4b Result	Demonstrates
Deut. 25:4 (Muzzled Ox)	No	N/A	Method works cleanly on unambiguous laws
Exodus 22:1-4 (Restitution)	No	N/A	Method handles multi-element laws
Tithing (Lev. 27; Num. 18; Deut. 14)	Yes	Variable formal reason: specific tenth is form	Step 4b resolves ambiguity the base method cannot
Bestiality (Lev. 18:23; 20:15-16)	No	N/A	Synchronic method is self-sufficient on creation-grounded laws
Blood-eating (Gen. 9:4; Lev. 17; Acts 15)	Yes	Variable formal reason: specific prohibition is not permanent	Step 4b can yield “no” – the test is falsifiable

The first two examples show the method’s baseline competence. The last three demonstrate the full range of the enhanced method: Step 4b resolving genuine ambiguity (tithing), the synchronic method operating without Step 4b where it is not needed (bestiality), and Step 4b producing a negative result that proves the test is not a rubber stamp (blood-eating). Together, these five examples demonstrate that the philonomic method – seven steps with Owen’s formal-reason test as a precision supplement at Step 4b – can handle the full range of Mosaic case laws with rigor, reproducibility, and fidelity to the text of Scripture.

Building a Presupposition Library

We recommend that interpreters maintain a running list of presuppositions as they work through case laws. Why?

1. Presuppositions recur across texts. “God has authority to command,” “humans are morally accountable,” “property rights exist,” “the powerful must not exploit the powerless”: these assumptions appear again and again throughout the Torah. A personal reference library means you do not start from zero with each new law. You begin to recognize: “This law also assumes X, which I identified in three other passages.”

2. Exegesis is cumulative. The more texts you analyze, the richer your presuppositional vocabulary becomes. Patterns emerge. You start seeing connections: “This law assumes the lesser-to-greater logic, just like Deuteronomy 25:4.” The work gets easier and deeper as your library grows.

3. Exegesis requires systematic knowledge of Scripture. You cannot fully surface the presuppositions of a text without knowing the whole counsel of God. Consider our Deuteronomy 25:4 example: “Humans are made in God’s image” is a presupposition we identified, but it comes from Genesis 1, not from Deuteronomy. “Israel was once in bondage in Egypt” comes from Exodus. The interpreter must bring the whole Bible to bear on each text. This is why exegesis is a systematic work; it requires familiarity with the entire corpus of Scripture.

4. This is why wisdom is required, and why depth matters. The method is deterministic in its steps, but the quality of the presuppositional analysis depends on the interpreter’s depth of biblical and theological knowledge. A new believer and a seasoned theologian working through the same law will produce different lists, not because the method is subjective, but because one has more to draw from. This is not a flaw; it is an incentive to grow. The method rewards those who know Scripture deeply.

5. Community enriches the work. When interpreters share and compare their presupposition lists, the whole community benefits. “I did not think of that assumption” becomes a moment of growth. Iron sharpens iron. A presupposition one interpreter surfaces may illuminate texts another interpreter is studying. This is why we commend this work to the church, not merely to individuals.

Practical Suggestion: As you work through case laws using this method, keep a separate document or notebook titled “Presupposition Library.” Each time you identify a presupposition, add it to the library with a reference to the text where you found it. Over time, you will build a theological reference that serves all your future exegesis, one that you can share with others for mutual edification.

Why This Method Matters

This tool prevents four common errors:

Treating Mosaic law as obsolete data: dismissing the judicial wisdom of Scripture as irrelevant to modern life.
Treating Mosaic law as a modern statute book: applying ancient forms without attention to their covenantal and cultural particularity.
Treating general equity as subjective intuition: appealing to vague moral sense rather than rigorous textual reasoning.
Relying on diachronic data alone to determine moral permanence: treating multi-epoch attestation as automatically decisive without examining whether the formal reason has changed across epochs. As Owen demonstrated with the blood-eating prohibition, a practice can appear in every redemptive-historical epoch and still not be morally permanent in its specific form – if the underlying rationale shifts.

Instead, this method allows Scripture to teach us how justice reasons, using its own categories and examples. The goal is neither to bind what God has loosed nor to loose what God has bound, but to discern with care what the Holy Spirit intends for the instruction of the church in every age.

A Note on Wisdom and Method

It would be wrong to leave you with the impression that applying this method is a merely mechanical exercise. It is not. The steps above require judgment at every turn. Which presuppositions are most significant? How does the form relate to the function? What application preserves proportionality?

These are questions that require wisdom: the wisdom that comes from knowing Scripture deeply, from being shaped by the Spirit, and from belonging to a community of believers who can sharpen and correct our reasoning.

But (and this is crucial) wisdom is not the same as intuition. We are not free to arrive at whatever conclusions feel right to us. Our wisdom is constrained wisdom, bounded by the text of Scripture, the teaching of the apostles, and the accumulated insight of the church through the ages.

The seven steps above provide those constraints. They force us to show our work, to trace our reasoning through identifiable stages, to answer specific questions with textual support. If we cannot demonstrate how we arrived at our conclusion, we have likely departed from exposition into speculation.

This is why the worked examples matter. They show what constrained wisdom looks like in practice. They demonstrate that the philonomic method produces defensible, reproducible results, not arbitrary applications that vary with the interpreter’s preferences.

The goal is neither rigid mechanism nor fluid subjectivity, but disciplined judgment: the kind of judgment that the apostles themselves exercised when they reasoned from Deuteronomy to pastoral compensation, from restitution law to the measure of Zacchaeus’s repentance.

Dear ones, I must tell you honestly: the method as I first conceived it had a gap. When tested against laws like tithing – where the practice spans multiple redemptive-historical epochs, where the form/function boundary is genuinely debatable, and where reasonable interpreters could draw the line in opposite places while following the same steps – the synchronic method alone proved under-determined. A careful critic showed me where the form/function knife could be wielded in opposite directions and produce contradictory results. The method’s own aspiration to be “as deterministic as possible” was not fully met for this class of laws.

The solution came from a man who has been dead for three centuries – John Owen, whose fingerprints were already on everything I had built. His formal-reason test, articulated in the Hebrews commentary, provides exactly the discriminant the method needed: when the form/function line is unclear, trace the underlying rationale across redemptive-historical epochs. If the reason shifts, the specific form is not morally permanent. If the reason holds, it is “of natural equity, and unalterable.” Step 4b narrows the zone of judgment without eliminating it – and a method that corrects itself in response to honest testing is more trustworthy, not less, than one that claims perfection from the outset.

May the Lord grant us such wisdom as we meditate on His law.

Using This Method

This method may be employed in several contexts:

Personal Study: When reading through the Pentateuch, use this method to slow down and think carefully about what each law teaches about God’s character and the nature of justice.

Teaching and Preaching: When preparing sermons or lessons on Old Testament law, this method provides a framework for responsible exposition that neither ignores the text nor misapplies it.

Ethical Deliberation: When facing complex moral questions in personal, ecclesial, or civil life, this method helps identify relevant biblical principles without falling into proof-texting or arbitrary application.

Group Discussion: This method can structure productive conversations about difficult passages, ensuring that all participants are asking the same questions and working from the same framework.

Testing Interpretations: When you encounter a proposed application of Old Testament law (whether from a book, sermon, or conversation), run it through this method. Does the interpretation account for form and function? Does it identify the right commandment domain? Does it respect the presuppositional analysis? The method provides objective criteria for evaluation.

The philonomist approaches God’s law with reverence, gratitude, and a desire to understand. “Oh how I love your law! It is my meditation all the day” (Psalm 119:97). This method is simply a tool to help us meditate more carefully on what God has revealed for our good and His glory.

A forthcoming companion volume, Presuppositional Hermeneutics: A Cognitive-Linguistic Framework for Biblical Interpretation, develops this presuppositional analysis into a full cognitive-linguistic method. The two works are designed to be complementary: this book supplies the theological framework (Steps 1, 3-7); that book supplies the linguistic depth for Step 2. ↩