Romans 4:12
He is 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.
World English Bible (Public Domain)
In context
Before · Romans 4:10–11
10How then was it counted? When he was in circumcision, or in uncircumcision? Not in circumcision, but in uncircumcision. 11He received the sign of circumcision, a seal of the righteousness of the faith which he had while he was in uncircumcision, that he might be the father of all those who believe, though they might be in uncircumcision, that righteousness might also be accounted to them.
12He is 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.