Romans 2:17-20

17But if you call yourself a Jew and rely on the law and boast in God

18and know his will and approve what is excellent, because you are instructed from the law;

19and if you are sure that you yourself are a guide to the blind, a light to those who are in darkness,

20an instructor of the foolish, a teacher of children, having in the law the embodiment of knowledge and truth—