SEV Biblia, Chapter 17:21
¶ El que engendra al loco, para su tristeza lo engendra ; y el padre del loco no se alegrará.
John Gill's Bible Commentary
Ver. 21. He that begetteth a fool [doth it] to his sorrow , etc.] As it proves in the issue; though it was joy to him when a man child was born, and took delight in him while in infancy and childhood, and promised himself much happiness in him when at years of discretion; but, instead of that, he departs from his education principles, despises all parental counsels and advice, and goes into all the extravagance of sin and folly; which is an heartbreaking to his godly and religious parents; for this is to be understood; not of an idiot, but of a wicked son, taking bad courses; and the father of a fool hath no joy ; in his son, but sorrow, and has scarce any joy or pleasure in anything else in all his enjoyments; the trouble he is filled with on his account embitters all he has, that he can take no satisfaction, or have any comfort of life; the concern for his son is uppermost in his thoughts, and hinders him from taking that pleasure which otherwise he might enjoy.
Matthew Henry Commentary
Verses 21 - This speaks very plainly what many wise and good men feel very strongly, how grievous it is to have a foolish, wicked child.
Original Hebrew
ילד 3205 כסיל 3684 לתוגה 8424 לו ולא 3808 ישׂמח 8055 אבי 1 נבל׃ 5036
