Abraham’s faith was the basis of his approval by God while he was still uncircumcised. The mark of circumcision is the seal of that approval. Therefore, he is the father of every believer who is not circumcised, and their faith, too, is regarded as the basis of their approval by God.
Are only the circumcised people blessed, or are uncircumcised people blessed as well? We say, “Abraham’s faith was regarded as the basis of God’s approval.”
As far as our relationship to Christ Jesus is concerned, it doesn’t matter whether we are circumcised or not. But what matters is a faith that expresses itself through love.