11And he received the sign of circumcision as a seal of the righteousness that he had by faith while still uncircumcised. This was to make him the father of all who believe but are not circumcised, so that righteousness may be credited to them also.
12And he became the father of the circumcised, who are not only circumcised but who also follow in the footsteps of the faith our father Abraham had while he was still uncircumcised.
13For the promise to Abraham or to his descendants that he would inherit the world was not through the law, but through the righteousness that comes by faith.
16This is why the promise is by faith, so that it may be according to grace, to guarantee it to all the descendants--not only to those who are of the law but also to those who are of Abraham's faith. He is the father of us all
17in God's sight. As it is written: I have made you the father of many nations. He believed in God, who gives life to the dead and calls things into existence that do not exist.
19He considered his own body to be already dead (since he was about 100 years old) and also considered the deadness of Sarah's womb, without weakening in the faith.
