Romans 2:27-29 New King James Version (NKJV)

27. And will not the physically uncircumcised, if he fulfills the law, judge you who, even with your written code and circumcision, are a transgressor of the law?

28. For he is not a Jew who is one outwardly, nor is circumcision that which is outward in the flesh;

29. but he is a Jew who is one inwardly; and circumcision is that of the heart, in the Spirit, not in the letter; whose praise is not from men but from God.

Romans 2