"Abraham believed God, and it was credited to him as righteousness." Now when a man works, his wages are not credited to him as a gift, but as an obligation. ... We have been saying that Abraham's faith was credited to him as righteousness.

How was Abraham justified?

That is, Abraham was justified (saved) by faith and works. The statement in Genesis 15:6, “And he believed in the Lord, and he accounted it to him for righteousness,” is quoted in Romans 4:3, 22; Galatians 3:6 and James 2:23.

Who is righteous before God?

The only way for sinners like you and me to be righteous before God is through faith in Christ Jesus. When we believe the Word of God which tells us that Christ fulfilled all righteousness for us and then was sacrificed for us to make full atonement for all our sins, God credits it to us for righteousness.