Romans 2:25-28

For circumcision benefits you if you observe the law, but if you are a lawbreaker, your circumcision has become uncircumcision. Therefore if an uncircumcised man keeps the law’s requirements, will his uncircumcision not be counted as circumcision? A man who is physically uncircumcised, but who fulfills the law, will judge you who are a lawbreaker in spite of having the letter of the law and circumcision. For a person is not a Jew who is one outwardly, and true circumcision is not something visible in the flesh.