30 Blows and wounds scrub away evil, and beatings purge the inmost being.

Matthew Henry's Commentary on Proverbs 20:30

Commentary on Proverbs 20:30

(Read Proverbs 20:30)

Severe rebukes sometimes do a great deal of good. But such is the corruption of nature, that men are loth to be rebuked for their sins. If God uses severe afflictions, to purify our hearts and fit us for his service, we have cause to be very thankful.