Ecclesiastes 10:11-14
Ecc 10:11 Surely the serpent will bite without enchantment; and a babbler is no better.
Ecc 10:12 The words of a wise man's mouth are gracious; but the lips of a fool will swallow up himself.
Ecc 10:13 The beginning of the words of his mouth is foolishness: and the end of his talk is mischievous madness.
Ecc 10:14 A fool also is full of words: a man cannot tell what shall be; and what shall be after him, who can tell him?