What does the Bible say about how a sinner can be righteous?

The Bible addresses how a sinner can be righteous primarily through the gospel of Jesus Christ. In Genesis 7:1, God calls Noah righteous not because of his own merit, but because he found grace in God's eyes. This idea establishes that righteousness is not based on personal achievement but on divine grace. Righteousness can be understood through five specific theological points: righteousness by union with Jesus Christ, righteousness by imputation, righteousness as a gift, righteousness by nature, and righteousness by faith. This understanding culminates in the belief that one is righteous not through their deeds, but through faith in Christ's atoning work.