Romans 2:26-28

New Revised Standard Version, Anglicised

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