Romans 4:12

“And the father of circumcision, etc..] So the Jews call Abraham µylwmynh çar f58, “the head of those that are circumcised”; and µylwml çar f59, “the head to them that are circumcised”; but the apostle here says, he is a father to them who are not of the circumcision only; not to the Jews only, in a spiritual sense, and not to all of them, since some were “of Israel”, who were not Israel, not Israelites indeed, or true believers; but [to such] also [who] walk in the steps of that faith of our father Abraham, which he had, being yet uncircumcised; that is, who have the same faith he had; imitate and follow him in the exercise of faith; walk by faith, as he did when he was uncircumcised, as…”

“And the father of circumcision - The father, that is, the ancestor, exemplar, or model of those who are circumcised, and who possess the same faith that he did. Not only the father of all believers Romans 4:11, but in a special sense the father of the Jewish people. In this, the apostle intimates that though all who believed would be saved as he was, yet the Jews had a special proprietorship in Abraham; they had special favors and privileges from the fact that he was their ancestor. Not of the circumcision only - Who are not merely circumcised, but who possess his spirit and his faith. Mere circumcision would not avail; but circumcision connected with faith like his, showed that they were…”

“And the father of the circumcision - Of those who are circumcised, and believe as Abraham did. To those who believe not, Abraham is not a father, neither are they his seed. Romans 4:13”

“to them: Rom 9:6, Rom 9:7; Mat 3:9; Luk 16:23-31; Joh 8:39, Joh 8:40; Gal 4:22-31 in the steps: Job 33:11; Pro 2:20; Sol 1:8; Co2 12:18; Pe1 2:21 Romans 4:13”