Proverbs 12:23
A prudent man conceals knowledge. The heart of fools proclaims foolishness.
Proverbs 13:16
Every prudent man acts with knowledge. A fool displays his folly.
Proverbs 15:2
The tongue of the wise uses knowledge properly. The mouth of fools pours out foolishness.
Proverbs 11:13
A talebearer reveals secrets. He that is of a faithful spirit conceals the matter.
Proverbs 10:14
Wise men preserve knowledge. The mouth of the foolish is near destruction.
Proverbs 10:19
Sin does not hide from a multitude of words. The wise controls his lips.
Ecclesiastes 10:3
When he who is a fool walks along the path, his wisdom fails him, and he says to every one that he is a fool.
Ecclesiastes 10:12-14
The words of a wise man's mouth are gracious; but the lips of a fool will swallow up himself.