Therefore know that only those who are of faith are sons of Abraham.
Galatians 3:7
Surrounding context
3:6 just as Abraham "believed God, and it was accounted to him for righteousness."
3:7 Therefore know that only those who are of faith are sons of Abraham.
3:8 And the Scripture, foreseeing that God would justify the Gentiles by faith, preached the gospel to Abraham beforehand, saying, "In you all the nations shall be blessed."