Proverbs 29:15 (BSB)

A rod of correction imparts wisdom, but a child left to himself disgraces his mother.

From Proverbs 29. Also in the ESV.

Commentary on Proverbs 29:15

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Proverbs 29:15: Parents, in educating their children, must consider, 1. The benefit of due correction. They must not only tell their children what is good and evil, but they must chide them, and correct them too, if need be, when they either neglect that which is good or do that which is evil.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Proverbs 29:15: The rod and reproof give wisdom,.... Are the means of giving wisdom to a child, reproved by its parent with the rod; and of driving out foolishness from him, and of making him wiser for the time to come; he shunning those evils for which he was before corrected, Pro 22:15; So the children of God grow wiser by the corrections and chastisements of their...
• Keil & Delitzsch (Lutheran), Biblical Commentary on the Old Testament on Proverbs 29:15: Pro 29:15 A proverb with שׁבט, Pro 29:15, is placed next to one with שׁופט, but it begins a group of proverbs regarding discipline in the house and among the people: 15 The rod and reproof give wisdom; But an undisciplined son is a shame to his mother.