When the pestilent are scourged, the foolish will become wiser. But if you chastise the wise, he will understand discipline
Other versions
King James Version
Smite a scorner, and the simple will beware: and reprove one that hath understanding, and he will understand knowledge. English Standard Version
Strike a scoffer, and the simple will learn prudence; reprove a man of understanding, and he will gain knowledge.New International Version
Flog a mocker, and the simple will learn prudence; rebuke a discerning man, and he will gain knowledge.