Galatians 3:6-9 (NKJV) Just as Abraham “believed God, and it was accounted to him for righteousness.”

Therefore know that only those who are of faith are sons of Abraham. 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.”

So then those who are of faith are blessed with believing Abraham.