Galatians 3:6-8

6So also Abraham “believed God, and it was credited to him as righteousness.” Gen. 15:6 7Understand, then, that those who have faith are children of Abraham. 8Scripture foresaw that God would justify the Gentiles by faith, and announced the gospel in advance to Abraham: “All nations will be blessed through you.” Gen. 12:3; 18:18; 22:18