Proverbs 29:19-21 Darby Translation (DARBY)
19 A servant is not corrected by words: he understandeth indeed, but he will not answer.
20 Hast thou seen a man hasty in his words? there is more hope of a fool than of him.
21 He that delicately bringeth up his servant from a child, shall in the end have him as a son.