Romans 2:19-21

New Catholic Bible

¹⁹ and you are confident that you are a guide to the blind, a light for those in darkness, ²⁰ an instructor of the foolish, and a teacher of the simple because in the Law you have the embodiment of knowledge and truth.

²¹ You, then, who teach others, do you not teach yourself? You who preach against stealing, are you yourself a thief?