Romans 2:22-29

22 You who say that one must not commit adultery, do you commit adultery? You who abhor idols, do you rob temples?
23 You who boast in the law, do you dishonor God by breaking the law?
24 For, as it is written, "The name of God is blasphemed among the Gentiles because of you."
25 Circumcision indeed is of value if you obey the law; but if you break the law, your circumcision becomes uncircumcision.
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.
29 He is a Jew who is one inwardly, and real circumcision is a matter of the heart, spiritual and not literal. His praise is not from men but from God.