Proverbs 21:11
When the mocker is punished, the simple gains wisdom. When the wise is instructed, he receives knowledge.
World English Bible (Public Domain)
In context
Before · Proverbs 21:9–10
9It is better to dwell in the corner of the housetop than to share a house with a contentious woman. 10The soul of the wicked desires evil; his neighbor finds no mercy in his eyes.
11When the mocker is punished, the simple gains wisdom. When the wise is instructed, he receives knowledge.