a fool's
Eclesiastes 10:12-14
12
The words of a wise man's mouth are gracious; but the lips of a fool will swallow him up.
13
The beginning of the words of his mouth is foolishness: and the end of his talk is wicked 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?
Provérbios 10:19
In the multitude of words there lacks not sin: but he that refrains his lips is wise.
Provérbios 15:2
The tongue of the wise uses knowledge aright: but the mouth of fools pours out foolishness.