Romans 2:25-29

Circumcision benefits you if you observe the law, but if you are a lawbreaker, your circumcision has become uncircumcision. So if an uncircumcised man keeps the law’s requirements, will not his uncircumcision be counted as circumcision? A man who is physically uncircumcised, but who keeps 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. On the contrary, a person is a Jew who is one inwardly, and circumcision is of the heart — by the Spirit, not the letter. That person’s praise is not from people but from God.