17But if you call yourself a Jew and rely on the law and boast of your relation to God 18and know his will and determine what is best because you are instructed in the law, 19and if you are sure that you are a guide to the blind, a light to those who are in darkness, 20a corrector of the foolish, a teacher of children, having in the law the embodiment of knowledge and truth, 21you, then, that teach others, will you not teach yourself? While you preach against stealing, do you steal? 22You that forbid adultery, do you commit adultery? You that abhor idols, do you rob temples? 23You that boast in the law, do you dishonor God by breaking the law? 24For, as it is written, “The name of God is blasphemed among the Gentiles because of you.”
25Circumcision indeed is of value if you obey the law; but if you break the law, your circumcision has become uncircumcision. 26So, if those who are uncircumcised keep the requirements of the law, will not their uncircumcision be regarded as circumcision? 27Then those who are physically uncircumcised but keep the law will condemn you that have the written code and circumcision but break the law. 28For a person is not a Jew who is one outwardly, nor is true circumcision something external and physical. 29Rather, a person is a Jew who is one inwardly, and real circumcision is a matter of the heart — it is spiritual and not literal. Such a person receives praise not from others but from God.