Romans 2:26-28

Revised Standard Version

²⁶ So, if a man who is uncircumcised keeps the precepts of the law, will not his uncircumcision be regarded as circumcision? ²⁷ Then those who are physically uncircumcised but keep the law will condemn you who have the written code and circumcision but break the law. ²⁸ For he is not a real Jew who is one outwardly, nor is true circumcision something external and physical.