Charles Ellicott Commentary Proverbs 22:8

"He that soweth iniquity shall reap calamity; And the rod of his wrath shall fail." — Proverbs 22:8 (ASV)

Vanity —i.e., calamity, trouble.

The rod of his anger shall fail.— When his time comes, and his iniquity is full, he shall himself suffer the punishment he brought on others, as Babylon did (Isaiah 14:6), Assyria (Isaiah 30:31).