Turretin’s Seven Rules for Understanding and Applying God’s Law



Modern English Explanation



Francis Turretin taught that God’s law must not be read merely as a list of outward commands. The law reveals God’s holy character and governs the entire life of human beings. It addresses not only our actions but also our thoughts, desires, motives, relationships, and worship. These seven rules help us understand the depth, breadth, and spiritual purpose of God’s commandments.


Rule 1: God’s Laws Govern Both the Outward Life and the Inner Heart

God’s commandments are not limited to outward behavior. They also address the heart, where our actions begin. God does not merely judge what we do; He examines why we do it and what desires motivate us.

Because God created the whole person—body and soul—His law applies to the whole person. True obedience requires not only external conformity but also inward holiness.

This is why Jesus Christ explained that the command against murder includes hatred and sinful anger toward others, and that the command against adultery includes lustful desires of the heart (Matthew 5:22, 28).

The law reaches deeper than actions. It exposes the condition of the heart from which those actions flow.

Application:
A person may avoid committing a visible sin while still violating God’s law through sinful thoughts, desires, pride, bitterness, or selfish motives. God requires inward purity as well as outward righteousness.


Rule 2: Every Negative Command Contains a Positive Duty

When God forbids something, He is also commanding the opposite virtue.

A prohibition does not merely tell us what to avoid; it teaches us what we should actively pursue.

For example, the command:

“You shall not murder”

does not only mean that we must avoid harming another person. It also requires us to protect, value, and promote our neighbor’s life whenever possible.

Likewise:

Every commandment has both a negative and positive dimension: it forbids evil and encourages holiness.

Application:
Obedience is not simply avoiding wrongdoing. It is actively seeking the good that God desires.


Rule 3: Each Commandment Includes Every Sin and Duty Related to Its Category

The Ten Commandments are not narrow rules that address only isolated actions. Each commandment serves as a broad category that includes all related sins and virtues.

A commandment forbids not only the most obvious form of sin but also every attitude, action, and habit that belongs to that same sinful category.

For example:

The seventh commandment:

“You shall not commit adultery”

includes not only adultery itself but every form of sexual immorality, impurity, lust, and corruption of God’s design for sexuality.

Likewise:

Turretin explains that God’s wisdom considers not only the greatest sins in each category but also the smaller sins that lead toward them or flow from them.

Application:
We must not ask only, “Did I commit the specific outward sin?” We must ask, “Have I violated the principle and purpose behind God’s command?”


Rule 4: The Causes Leading to Sin Are Also Forbidden by the Commandment

God’s law addresses not only sinful actions but also the causes and influences that produce sinful actions.

Human behavior does not happen randomly. Actions come from desires, attitudes, choices, habits, and environments. Therefore, anything that encourages or leads toward sin must also be rejected.

For example, the command:

“Honor your father and your mother”

requires children to respect and obey their parents. But it also requires parents to fulfill their responsibility by loving, teaching, and caring for their children according to God’s will.

The command reaches both directions because relationships involve responsibilities on every side.

Application:
Wisdom requires us to remove not only sinful actions but also the roots and occasions that produce them.

A person who wants to overcome sin must consider:


Rule 5: The First Table of the Law Takes Priority Over the Second Table

The Ten Commandments are often divided into two sections:

The First Table:
Commands concerning our love and worship of God.

The Second Table:
Commands concerning our love and duties toward other people.

The first priority is always our loyalty to God. Love for others is commanded by God, but it must never replace love and obedience toward God.

Jesus taught that anyone who loves family, possessions, or human approval more than Him is not worthy to be His disciple (Luke 14:26).

Therefore, when human commands conflict with God’s commands, God’s command must come first.

For example:

As the apostles declared:

“We must obey God rather than men.” (Acts 5:29)

Application:
Every earthly relationship and responsibility must remain under our supreme devotion to God.


Rule 6: Affirmative and Negative Commands Differ in Their Application

God’s commands include both:

  1. Prohibitive commands — commands telling us what we must not do.
    Example: “You shall not steal.”

  2. Affirmative commands — commands telling us what we must do.
    Example: “Love your neighbor.”

Negative commands generally bind us at all times. We must never commit sin.

However, affirmative duties must be practiced according to proper circumstances and opportunities.

For example:

But we cannot always perform every positive duty at every moment.

Parents cannot honor their children every moment because circumstances vary. We cannot always be actively helping every person everywhere. Duties must be exercised according to wisdom, opportunity, and ability.

Application:
God requires constant obedience, but He also requires wisdom in knowing how and when particular duties should be performed.


Rule 7: The Beginning and the End of the Law Is Love

The entire law of God is summarized by love.

Jesus taught:

“You shall love the Lord your God with all your heart and with all your soul and with all your mind… You shall love your neighbor as yourself. On these two commandments depend all the Law and the Prophets.”
— Matthew 22:37–40

Love is not merely one command among many. It is the foundation and purpose of every commandment.

The first four commandments teach us how to love God:

The last six commandments teach us how to love others:

Turretin explains that love for God is rightly called the first commandment because everything begins with God and must ultimately return to God.

Application:
The goal of obedience is not merely rule-keeping. The goal is communion with God through a life shaped by love.


Summary of Turretin’s Seven Rules

  1. God’s law governs both actions and the heart.

  2. Every prohibition contains a positive duty.

  3. Each commandment includes all related sins and virtues within its category.

  4. The causes and occasions leading to sin are also addressed by God’s law.

  5. Love for God takes priority over every human relationship and duty.

  6. Positive and negative commands must be applied according to their nature and circumstances.

  7. Love for God and neighbor is the foundation, purpose, and fulfillment of the entire law.

In Turretin’s understanding, God’s law is not merely a list of restrictions. It is a revelation of God’s holiness and a guide for restoring human beings to a life of love, righteousness, and faithful obedience before Him.