Romans 2:25-29

25Circumcision has value if you observe the law, but if you break the law, your circumcision has become uncircumcision. 26If a man who is not circumcised keeps the requirements of the law, will not his uncircumcision be regarded as circumcision? 27The one who is physically uncircumcised yet keeps the law will condemn you who, even though you have the written code and circumcision, are a lawbreaker.

28A man is not a Jew because he is one outwardly, nor is circumcision only outward and physical. 29No, a man is a Jew because he is one inwardly, and circumcision is a matter of the heart, by the Spirit, not by the written code. Such a man’s praise does not come from men, but from God.