Romans 4:9-13

9[Does] this blessedness then [rest] on the circumcision, or also on the uncircumcision? For we say that faith has been reckoned to Abraham as righteousness.

10How then has it been reckoned? when he was in circumcision, or in uncircumcision? Not in circumcision, but in uncircumcision.

11And he received [the] sign of circumcision [as] seal of the righteousness of faith which [he had] being in uncircumcision, that he might be [the] father of all them that believe being in uncircumcision, that righteousness might be reckoned to them also;

12and father of circumcision, not only to those who are of [the] circumcision, but to those also who walk in the steps of the faith, during uncircumcision, of our father Abraham.

13For [it was] not by law that the promise was to Abraham, or to his seed, that he should be heir of [the] world, but by righteousness of faith.