Romans 4
12 Ref The father of circumcision to those who not only are of the circumcision, but who also walk in the steps of that faith of our father Abraham, which he had in uncircumcision.
13 Ref For the promise to Abraham and to his seed that he should be heir of the world wasn't through the law, but through the righteousness of faith.
14 Ref For if those who are of the law are heirs, faith is made void, and the promise is made of no effect.