MNT(i)
17 Now if you bear the name of a Jew, and rely upon law, and boast yourself in God,
18 and know his will, and can test the things that differ; if you are instructed out of the Law,
19 and are confident that you yourself are a darkness,
20 an instructor of the foolish, a teacher of the young, because you have in the Law the form of knowledge and of the truth—well then, you who are teaching others, do you ever teach yourself?
21 You who are preaching that a man should not steal, do you practise theft?
22 You who keep saying that a man should not commit adultery, do you commit adultery? You who hold idols in abhorrence, are you plundering their temples?
23 You who are making your boast in the Law, do you habitually dishonor God through your transgressions of the Law?
24 For the name of God is continually blasphemed among the Gentiles because of you, even as the Scripture itself says.
25 Circumcision does indeed profit, if you are obedient to the Law; but if you habitually break the Law, your circumcision is become uncircumcision.