The Moral Law and Unregenerate People: Westminster Larger Catechism Q96

The Westminster Larger Catechism asks, “What particular use is there of the moral law to unregenerate people?” The answer is, “The moral law is of use to unregenerate people to awaken their consciences to flee from wrath to come and to drive them to Christ. Alternatively, if they continue in their state and way of sin, it leaves them inexcusable and under the curse of the law.”

This is a sobering question, but also a merciful one. The moral law does not save sinners. It cannot give life or justification before God. Yet the moral law is not useless. God uses it to expose sin, awaken the conscience, warn of judgment, and drive sinners to Jesus Christ.

The moral law acts like an alarm. It does not put out the fire, but it warns us that the danger is real. It does not heal the disease, but it reveals the sickness. It does not save, but it shows us why we must flee to the Savior.

The Moral Law Awakens the Conscience

The first use of the moral law to unregenerate people is that it awakens the conscience. Every person has some knowledge of God’s righteous standard. Romans 2:15 says that even those without the written law “show that the work of the law is written on their hearts, while their conscience also bears witness.”

No one is completely without moral awareness. People will suppress the truth, excuse their sin, or compare themselves to others. But the conscience still speaks. It accuses. It warns. It testifies that there is a difference between right and wrong.

The moral law presses upon that conscience. It says, “You shall have no other gods before me.” It says, “You shall not murder.” It says, “You shall not commit adultery.” It says, “You shall not steal.” It says, “You shall not covet.” But it does more than address outward behavior. It exposes the heart.

We will say, “I have never murdered anyone,” but the moral law exposes our hatred and anger. We will say, “I have never committed adultery,” but the moral law exposes our lust and impurity. We will say, “I am a good person,” but the moral law asks if we have loved God with all our heart, soul, mind, and strength.

This awakening is a mercy. It is painful, but gracious. It is far better to be awakened now than to remain asleep until the day of judgment.

The Moral Law Shows Sin as Sin

The moral law is useful to the unregenerate because it shows sin for what it truly is. Sin is not merely weakness, mistake, or poor judgment. Sin is rebellion against the holy God.

Paul writes in 1 Timothy 1:9–10 that “the law is not laid down for the just but for the lawless and disobedient, for the ungodly and sinners,” and then he lists sins that are contrary to sound doctrine. The moral law confronts lawlessness. It names sin honestly.

This is necessary because sinners are skilled at self-defense. We rename pride as confidence, greed as ambition, lust as desire, bitterness as honesty, and rebellion as independence. But the moral law strips away those false names and calls sin what God calls it.

That is not cruelty. That is the truth. A doctor who refuses to name the disease is not loving the patient. In the same way, we do not love sinners by hiding the seriousness of sin. The moral law reveals that our greatest problem is not outside of us. It is within us. We do not need improvement. We need redemption.

The Moral Law Warns of Wrath to Come

The catechism says that the moral law awakens unregenerate people “to flee from wrath to come.” The law not only exposes sin; it warns of judgment.

Romans 1:20 says that God’s invisible attributes have been clearly perceived in creation, “so they are without excuse.” Creation declares that God is real, powerful, and worthy of worship. The moral law adds its own witness, showing that every person is accountable before him.

This is not a popular truth, but it is necessary. If there is no wrath to come, then there is nothing urgent about sin. If there is no judgment, then repentance becomes optional. If there is no curse of the law, then the cross becomes unnecessary.

But Scripture speaks plainly. Galatians 3:10 says, “Cursed be everyone who does not abide by all things written in the Book of the Law, and do them.” The law does not say, “Do your best.” It does not say, “Try harder than most people.” The law demands perfect, personal, and continual obedience.

That leaves the unregenerate with no refuge in themselves. Their works cannot cover them. Their sincerity cannot excuse them. Their religious activity cannot justify them. Outside of Christ, they remain under the curse of the law.

Yet even this warning is merciful. The sign that says “Bridge Out Ahead” is not hateful. It is meant to turn travelers around before they perish. In the same way, the moral law warns sinners so that they may flee from the wrath to come.

The Moral Law Drives Sinners to Christ

The moral law wounds in order that the sinner might seek the true Physician. It exposes guilt so that the sinner might seek the only Savior. It shuts every false door so that sinners may run to Christ.

Galatians 3:24 says, “So then, the law was our guardian until Christ came, in order that we might be justified by faith.” The law is not Christ. It does not forgive, cleanse, justify, or give new life. But it drives sinners to Christ by showing them their need.

The moral law says, “You are guilty.” The gospel says, “Christ receives the guilty who come to him by faith.” The moral law says, “You deserve judgment.” The gospel says, “Christ bore judgment for his people.” The moral law says, “You cannot make yourself righteous.” The gospel says, “Christ is your righteousness.”

This is why we must not preach the law without the gospel, and we must not preach the gospel as though people have no need of rescue. The law shows the wound. The gospel reveals the cure. The law exposes the sinner. The gospel exalts the Savior.

The Moral Law Leaves the Unrepentant Without Excuse

The catechism also gives a solemn alternative. If unregenerate people continue in their state and way of sin, the moral law “leaves them inexcusable and under the curse of the law.”

The same law that awakens some will condemn others. The same warning that drives some to Christ will testify against those who refuse him. The problem is not with the law. The problem is with the hardened heart.

When people hear God’s moral law and continue in sin, they are not merely lacking information. They are rejecting the truth. When they refuse Christ, they are not neutral. They are turning away from the only Savior given for sinners.

This should humble believers. We should not speak of unregenerate people with pride or contempt. We were once blind. We were once under condemnation. If we have fled to Christ, it is only because God has been merciful.

The Moral Law and the Mercy of Christ

The moral law is of great use to unregenerate people when it is understood in its proper place. It cannot save, but it can awaken. It cannot justify, but it can expose guilt. It cannot give life, but it can drive sinners to Christ.

So we should speak of the moral law with both seriousness and tenderness. We must not soften God’s standard, but neither should we present the law as though it were the final word. For sinners who come to Christ, the final word is not curse, but grace. Not condemnation, but forgiveness. Not wrath, but reconciliation with God.

The moral law tells the truth about our sin. The gospel tells the greater truth about God’s mercy in Christ.

Therefore, let the law do its work. Let it awaken the conscience. Let it expose sin. Let it warn of wrath. Let it strip away every false hope. But then let it drive sinners to Jesus Christ, who alone delivers us from the curse of the law and brings us into salvation by grace through faith.