For circumcision verily profits, if you keep the law: but if you are a breaker of the law, your circumcision is made uncircumcision.
All Commentaries on Romans 2:25 Go To Romans 2
John Chrysostom
AD 407
Paul accepts the value of circumcision in theory but abolishes it in practice. For circumcision is only useful if the person circumcised keeps the law.… But a circumcised person who breaks the law is really uncircumcised, and Paul condemns him without hesitation.