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^D8019.

Darby Bible Notes

Abraham - 'Father of circumcision' means, he in whom real separation to God was first publicly established. Perhaps 'of the faith, during [his] uncircumcision, of our father Abraham' may be clearer.

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.

Strong's

12 And ^G2532 the father^G3962 of circumcision^G4061 to them who are not^G3756 of^G1537 the circumcision^G4061 only^G3440, but^G235 who also^G2532 walk^G4748 in the steps^G2487 of that faith^G4102 of our^G2257 father^G3962 Abraham^G11, which he had] had being^G1722 yet uncircumcised^G203.