(Extracts from Francis Turretin, edited into modern English)
When we speak of God’s justice, we are speaking about His perfect righteousness. God always does what is right, good, and fitting according to His own holy nature. He never acts unfairly, wrongly, or without reason. Justice is not something outside of God that He must obey. It belongs to who He is. God is just because God is God.
Scripture teaches this plainly: “The Rock, his work is perfect, for all his ways are justice” (Deut. 32:4). God’s justice is not learned, improved, or measured by anything else. It is eternal and unchanging.
Some people think justice and goodness are in tension, as if God must choose between being kind or being just. Turretin firmly rejects this idea. God’s justice flows from His goodness. Because God is good, He must also be just. If God ignored evil or treated righteousness and wickedness the same, He would not be good.
Justice does not make God harsh. It makes Him faithful to what is right. In fact, without justice, mercy itself would lose its meaning.
Turretin carefully distinguishes how the word “justice” is used when applied to God.
First, there is essential justice. This refers to God’s nature itself. God is righteous in His being. He does not merely act justly; He is just.
Second, there is relative or moral justice, which refers to God’s actions toward His creatures. This includes how He governs the world, rewards obedience, and punishes sin.
These distinctions help us speak clearly without confusing God’s nature with His works.
God’s justice is closely connected to His law. The law expresses what is right because it reflects God’s own holy character. God does not declare something good by mere will alone, as if right and wrong were arbitrary. Rather, God wills what is good because it agrees with His righteous nature.
Therefore, when God commands obedience or forbids sin, He is not imposing something unreasonable. His law is just, wise, and good.
Turretin asks an important question: Is God free to overlook sin, or must He punish it?
He answers carefully. God is not forced by anything outside Himself. Yet God cannot deny His own nature. Because God is just and holy, sin cannot simply be ignored. To leave sin unpunished would be contrary to His righteousness.
This does not mean God delights in punishment. It means that justice requires that sin be addressed. God would cease to be just if He treated sin as though it did not matter.
God’s justice shines most clearly at the cross of Christ. At the cross, God did not set aside justice in order to show mercy. Instead, He satisfied justice through a substitute.
Christ bore the punishment that justice demanded for sin. In this way, God is “just and the justifier of the one who has faith in Jesus” (Rom. 3:26). Mercy does not cancel justice. Mercy fulfills justice through Christ.
This guards the gospel from becoming sentimental or shallow. Salvation is not God ignoring sin. It is God dealing with sin fully and righteously in His Son.
God’s justice also assures us that there will be a final judgment. Evil will not win. Wrongs will not go unanswered forever. God will judge the world with perfect fairness. No sin will be overlooked, and no righteous deed will be forgotten.
This is both a warning and a comfort. It warns the unrepentant, but it comforts believers who trust in God’s righteous rule.
Understanding God’s justice should shape our lives.
It humbles us, because we see how serious sin truly is.
It drives us to Christ, because only His righteousness can save us.
It steadies our faith, because we know God always does what is right.
It teaches us to pursue justice ourselves, reflecting God’s character in our dealings with others.
God’s justice is not a cold or distant attribute. It is the holy righteousness of the living God. He is just in His nature, just in His law, just in His judgments, and just in salvation through Christ. To deny God’s justice is to misunderstand God Himself. To embrace it is to see more clearly both the seriousness of sin and the glory of the gospel.