NET
12 And he is also the father of the circumcised, who are not only circumcised, but who also walk in the footsteps of the faith that our father Abraham possessed when he was still uncircumcised.
Darby
12 and 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.
KJV
12 And the father of circumcision to them who are not of the circumcision only, but who also walk in the steps of that faith of our father Abraham, which [he had] being [yet] uncircumcised.