Romans 2:20 in the King James Version
An instructor of the foolish, a teacher of babes, which hast the form of knowledge and of the truth in the law.
Context
19 and are confident that you yourself are a guide of the blind, a light to those who are in darkness,
20 a corrector of the foolish, a teacher of babies, having in the law the form of knowledge and of the truth.
21 You therefore who teach another, don’t you teach yourself? You who preach that a man shouldn’t steal, do you steal?