The righteousness of God, one of the most prominent attributes of God in the Scriptures, is also one of the most elusive. Initially, distinguishing the righteousness of God from His holiness or His goodness seems difficult. In addition, the righteousness of God is virtually synonymous with His justice: [1]
While the most common Old Testament word for just means 'straight,' and the New Testament word means 'equal,' in a moral sense they both mean 'right.' When we say that God is just, we are saying that He always does what is right, what should be done, and that He does it consistently, without partiality or prejudice. The word just and the word righteous are identical in both the Old Testament and the New Testament. Sometimes the translators render the original word 'just' and other times 'righteous' with no apparent reason (cf. Nehemiah 9:8 and 9:33 where the same word is used). But whichever word they use, it means essentially the same thing. It has to do with God's actions. They are always right and fair.
The righteousness of God is particularly important in relation to salvation. In Romans 3, Paul points out God not only justifies sinners (that is, He declares them righteous), but He is also shown to be just (righteous) in the process: [2]
But now apart from the Law the righteousness of God has been manifested, being witnessed by the Law and the Prophets, 22 even the righteousness of God through faith in Jesus Christ for all those who believe; for there is no distinction; 23 for all have sinned and fall short of the glory of God, 24 being justified as a gift by His grace through the redemption which is in Christ Jesus; 25 whom God displayed publicly as a propitiation in His blood through faith. This was to demonstrate His righteousness, because in the forbearance of God He passed over the sins previously committed; 26 for the demonstration, I say, of His righteousness at the present time, that He might be just and the justifier of the one who has faith in Jesus. 27 Where then is boasting? It is excluded. By what kind of law? Of works? No, but by a law of faith. 28 For we maintain that a man is justified by faith apart from works of the Law (Romans 3:21-28).
Men have failed to live up to the standard of righteousness laid down by the Law (Romans 3:9-20). God is just in condemning all men to death, for all men without exception have sinned and come short of the glory of God (Romans 3:23). All men are worthy of death because the “wages of sin is death” (Romans 6:23). God is just in condemning the unrighteous.
But God is also just in saving sinners. As Paul puts it, He is “just and the justifier of the one who has faith in Jesus” (Romans 3:26). How can this be? God is just because His righteous anger has been ...