Romans 4:10-12

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.