23 A prudent man keeps his knowledge, but the hearts of fools proclaim foolishness.
Proverbs 12:23 Cross References - WEB
Proverbs 10:14
14 Wise men lay up knowledge, but the mouth of the foolish is near ruin.
Proverbs 10:19
19 In the multitude of words there is no lack of disobedience, but he who restrains his lips does wisely.
Proverbs 11:13
13 One who brings gossip betrays a confidence, but one who is of a trustworthy spirit is one who keeps a secret.
Proverbs 13:16
16 Every prudent man acts from knowledge, but a fool exposes folly.
Proverbs 15:2
2 The tongue of the wise commends knowledge, but the mouth of fools gush out folly.
Ecclesiastes 10:3
3 Yes also when the fool walks by the way, his understanding fails him, and he says to everyone that he is a fool.
Ecclesiastes 10:12-14
12 The words of a wise man’s mouth are gracious; but a fool is swallowed by his own lips.
13 The beginning of the words of his mouth is foolishness; and the end of his talk is mischievous madness.
14 A fool also multiplies words. Man doesn’t know what will be; and that which will be after him, who can tell him?