28 Even a fool, when he keeps silent, is counted wise. When he shuts his lips, he is thought to be discerning.
Proverbs 17:28 Cross References - WEB
Job 13:5
5 Oh that you would be completely silent! Then you would be wise.
Proverbs 15:2
2 The tongue of the wise commends knowledge, but the mouth of fools gush out folly.
Ecclesiastes 5:3
3 For as a dream comes with a multitude of cares, so a fool’s speech with a multitude of words.
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 10:14
14 A fool also multiplies words. Man doesn’t know what will be; and that which will be after him, who can tell him?