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.
All Commentaries on Romans 4:12 Go To Romans 4
John Chrysostom
AD 407
Circumcision is meaningless if there is no faith within. It is a sign of righteousness, but if there is no righteousness, then there is no sign either. The reason the Jews received a sign was that they might seek diligently for the reality of which the sign spoke. If they had done so, they would not have needed the sign in the first place. Righteousness is not the only thing that circumcision proclaims; it also proclaims that righteousness can be found in an uncircumcised man (e.g., Abraham). In effect, therefore, circumcision proclaims that there is no need of circumcision.