So the promise is received by faith. It is given as a free gift. And we are all certain to receive it, whether or not we live according to the law of Moses, if we have faith like Abraham’s. For Abraham is the father of all who believe.
Circumcision was a sign that Abraham already had faith and that God had already accepted him and declared him to be righteous— even before he was circumcised. So Abraham is the spiritual father of those who have faith but have not been circumcised. They are counted as righteous because of their faith.
The real children of Abraham, then, are those who put their faith in God.What’s more, the Scriptures looked forward to this time when God would make the Gentiles right in his sight because of their faith. God proclaimed this good news to Abraham long ago when he said,“ All nations will be blessed through you.”
Through Christ Jesus, God has blessed the Gentiles with the same blessing he promised to Abraham, so that we who are believers might receive the promised Holy Spirit through faith.