Reference

Ecclesiastes 10:12

The words of a wise man’s mouth are gracious; but the lips of a fool will swallow up himself.
10

If the iron be blunt, and he do not whet the edge, then must he put to more strength: but wisdom is profitable to direct.

11

Surely the serpent will bite without enchantment; and a babbler is no better.

12

The words of a wise man’s mouth are gracious; but the lips of a fool will swallow up himself.

13

The beginning of the words of his mouth is foolishness: and the end of his talk is mischievous madness.

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?