God’s gift of Christ brings people into a right relationship with God.
In Romans 3:9–20, A Christian missionary who once persecuted the church More states that no human being is A righteous person is one who is ethical and faithful to God's covenant. Righteousness in the Old Testament is an attitude of God; in the New Testament it is a gift of God through grace. In the New Testament righteousness is a relationship with God... More and that no one, in fact, can be made righteous by observing the Law. Romans 3:21 marks a dramatic turn in Paul’s argument by declaring that now, in Jesus is the Messiah whose life, death, and resurrection are God's saving act for humanity More Christ, God’s righteousness has been revealed. The “righteousness of God” (Romans 3:21–22) refers to God’s saving activity in Jesus Christ, whose death and resurrection frees people (i.e., redeems them; 3:24) from the power of sin that alienates them from God and brings them into right relationship with God. This relationship is what it means to be “justified.” It is a divine gift that people enter into simply by trusting what God has done in Christ. Paul’s repetition in Romans 3:23 of his claim in 3:9 that all have sinned (both gentiles and Jews) emphasizes that God’s saving activity in Christ is a pure gift that is on behalf of all people. People cannot free themselves from the dominion of sin—this requires an act of God.
Although Paul declares that God’s righteousness is now manifest apart from the Law (Romans 3:21), he nonetheless affirms that the Scriptures witness to the revelation of God’s righteousness in the saving work of Christ. In other words, the gospel of Jesus Christ fulfills the expectations of Scripture.