21 He that begetteth a fool [doeth it] to his sorrow, and the father of a vile [man] hath no joy.

Matthew Henry's Commentary on Proverbs 17:21

Commentary on Proverbs 17:21

(Read Proverbs 17:21)

This speaks very plainly what many wise and good men feel very strongly, how grievous it is to have a foolish, wicked child.