Charles Ellicott Commentary Proverbs 9:7

"He that correcteth a scoffer getteth to himself reviling; And he that reproveth a wicked man [getteth] himself a blot." — Proverbs 9:7 (ASV)

He that reproveth a scorner ...—Wisdom does not address the scoffer, nor the godless: this would be giving that which is holy unto the dogs, and casting pearls before swine (Matthew 7:6). (Compare our Lord’s own plan of teaching by parables, so that His hearers might not understand (Luke 8:10)).

Getteth to himself shame.—Or, insult.