Romans 2:17-20

Now you, if you call yourself a Jew; if you rely on the law and boast in God; if you know his will and approve of what is superior because you are instructed by the law; if you are convinced that you are a guide for the blind, a light for those who are in the dark, an instructor of the foolish, a teacher of little children, because you have in the law the embodiment of knowledge and truth