What does it mean that God is just?
The justice of God is one of the most far-reaching themes in Scripture, touching on His very nature and the way He deals with sinners. It is not simply that God enforces justice — He is just, and everything He does flows from that character.
God's Justice as His Own Character
William Kelly develops this at length in connection with Romans 3. The "righteousness of God" is not something external — it is a quality belonging to God Himself:
William KellyWho is just? God. Here there is an all-important principle: the righteousness of God means, first of all, His own righteousness — that He is just. It is not man's, or even yet some other's positive righteousness, made up of a quantity of legal merit, put upon him. The righteousness spoken of is God's being righteous ("just" is the same word) and yet so declared that He can justify the most dreadful sinners.
Kelly goes on to explain that for God to be just in forgiving, there must be an adequate moral ground — and that ground is found in the blood of Christ:
righteouRighteousness has a double meaning. I am righteous, say, in rewarding or forgiving — that this supposes an adequate claim which makes it righteous that I should do so — merit of some kind. If I have promised anything, or anything be morally due, to righteousness, I am righteous in giving it. Thus that God should be righteous in forgiving and justifying, there must be an adequate moral motive for his doing so. In the sinner, clearly, there was not. In the blood of Christ there was.
"Just, and the Justifier"
The great declaration of Romans 3:26 — that God is "just, and the justifier of him which believeth in Jesus" — is central. An anonymous writer in The Bible Treasury puts the truth with beautiful simplicity:
1862_176_Divine_RighteousnessGod cannot do anything to make justification more perfect than it is. Any attempt of man to add to it, would be like trying to add light to the sun. Love brought Christ down, and righteousness raised Him up. The term, "the righteousness of God," means that God is just in justifying by the faith of Christ... The "righteousness of God" is the obligation, as it were, to bless me in Christ if I look to Him for salvation.
Kelly further expounds the two-sided display of God's justice — toward Old Testament saints and toward present-day believers:
righteouHere, then, we have the righteousness of God developed in the simplest and clearest way. It means that God is just, and justifies in virtue of Christ. He is just, because sin has been met in the cross: sin has been judged of God; it has been suffered and atoned for by Christ. More than that: the Lord Jesus has so magnified God, and so glorified His character, that there is a positive debt now on the other side. Instead of the obligation being, as it was, altogether on man's side... God now has interposed, and, having been so magnified in the man Christ Jesus in His death, He is now positively just when He justifies the soul that believes in Jesus.
A Just God and a Saviour
J. N. Darby addresses this theme directly in a striking tract. He points out that every person measures themselves by a standard designed to excuse their own sin — but God has one fixed standard: His own righteousness:
J. N. DarbyWhen a person begins to find that it is not by comparing himself with others that he is to judge, but by comparing himself with God, when his conscience begins to be awakened to think of sin as before God, then indeed he finds himself guilty and ruined... And if we only heard that God was just, there could be no hope. But He is "a just God and a Saviour."
Using the story of the woman taken in adultery (John 8), Darby shows that God's justice and His grace meet in Christ. The one Person who could have cast the stone — the sinless One — is the very One who says, "Neither do I condemn thee":
38JUST_GODShe was standing before One who could say, "Without sin," and who therefore could cast the stone... What would He say? Man had not dared to cast the stone; now what would God do? "Neither do I condemn thee; go, and sin no more." Such is still the gracious message to the ruined sinner, pronounced by the very Judge Himself.
Faithful and Just to Forgive
H. H. Snell draws out the practical consequence: because Christ bore the full weight of divine justice on the cross, it would be unjust for God to condemn the believer a second time for sins already judged:
H. H. SnellHe is faithful and just to forgive us our sins; for we have forgiveness through the blood. How could God in righteousness condemn our sins in the person of His own Son, and afterwards condemn them on us? Impossible. The idea would accuse God of injustice. But, blessed be His name, in virtue of the atoning work He justifies us... Instead of God condemning us, He now justifies us, and declares that He is "just, and the justifier of him which believeth in Jesus."
William Kelly makes the same point from 1 John 1:9 — God's justice now works for the believer, not against him:
William Kelly"If we confess our sins, He is faithful and righteous to forgive us our sins, and to cleanse us from every unrighteousness." If we have been betrayed into sin, what do we do then? It is so at conversion; it remains so throughout when the need arises. For our God cannot bear sins. We do not hide them; we confess them to God... He is faithful and righteous to forgive.
C. H. Mackintosh puts it concisely in his notes on Genesis:
C. H. Mackintosh"If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness." The proper path for a divinely-restored soul, is "the path of righteousness." In other words, having tasted divine grace, we walk in righteousness... The grace that forgives us our sins, cleanses us from all unrighteousness. Those things must never be separated.
The justice of God means, at its root, that God is righteous in all He does — He cannot act contrary to His own nature. Before the cross, this was terrifying news for sinners, because a just God must judge sin. But the cross has transformed the picture entirely. There, Christ bore the full weight of divine judgment, glorifying God so completely that God is now righteous in forgiving. His justice no longer stands against the believer — it stands for him. God would be unjust not to justify the one who believes in Jesus, because the blood of Christ has given Him a righteous ground on which to do so. Love brought Christ down; righteousness raised Him up. And the believer now rests, not on the uncertain ground of his own merit, but on the solid rock of God's own justice satisfied at the cross.