Romans 2:21-25

you, therefore, who teach someone else, do you not teach yourself? You who preach that one is not to steal, do you steal?

You who say that one is not to commit adultery, do you commit adultery? You who loathe idols, do you rob temples?

You who boast in the Law, through your breaking the Law, do you dishonor God?

For “the name of God is blasphemed among the Gentiles because of you,” just as it is written.

For indeed circumcision is of value if you practice the Law; but if you are a violator of the Law, your circumcision has turned into uncircumcision.