So the men of faith share the blessing of Abraham and his faith.
That is why it all turns upon faith; it is to make it a matter of God's favor, so that the promise may hold good for all Abraham's descendants, not only those who are adherents of the Law, but also those who share the faith of Abraham. For he is the father of all of us;
and he was afterward given the mark of circumcision as the stamp of God's acknowledgment of the uprightness based on faith that was his before he was circumcised, so that he should be the forefather of all who, without being circumcised, have faith and so are credited with uprightness,
but also on ours, for it is to be credited also to us who have faith in him who raised from the dead our Lord Jesus,
So you see, the real descendants of Abraham are the men of faith.
in order that the blessing given to Abraham might through Jesus Christ reach the heathen, so that through faith we might receive the promised Spirit.
And if you belong to Christ, then you are true descendants of Abraham and his heirs under the promise.