Charles Ellicott Commentary Proverbs 10:6

"Blessings are upon the head of the righteous; But violence covereth the mouth of the wicked." — Proverbs 10:6 (ASV)

Violence covereth the mouth of the wicked. — Curses and deeds of violence have proceeded from his mouth, but God frustrates them; they return unto him void (Isaiah 55:11), and, as it were, stop his mouth, reducing him to silence.