Ecclesiastes 10:12
King James Version
“The words of a wise man’s mouth gracious; but the lips of a fool will swallow up himself.”
Context
9Whoso removeth stones shall be hurt therewith; he that cleaveth wood shall be endangered thereby.
10If the iron be blunt, and he do not whet the edge, then must he put to more strength: but wisdom profitable to direct.
11Surely the serpent will bite without enchantment; and a babbler is no better.
12The words of a wise man’s mouth gracious; but the lips of a fool will swallow up himself.
13The beginning of the words of his mouth foolishness: and the end of his talk mischievous madness.
14A fool also is full of words: a man cannot tell what shall be; and what shall be after him, who can tell him?
15The labour of the foolish wearieth every one of them, because he knoweth not how to go to the city.