20 One who has a perverse heart doesn’t find prosperity, and one who has a deceitful tongue falls into trouble.
Proverbs 17:20 Cross References - WEB
Psalms 18:26
26 With the pure, you will show yourself pure. With the crooked you will show yourself shrewd.
Proverbs 3:32
32 For the perverse is an abomination to Yahweh, but his friendship is with the upright.
Proverbs 6:12-15
12 A worthless person, a man of iniquity, is he who walks with a perverse mouth,
13 who winks with his eyes, who signals with his feet, who motions with his fingers,
14 in whose heart is perverseness, who devises evil continually, who always sows discord.
15 Therefore his calamity will come suddenly. He will be broken suddenly, and that without remedy.
Proverbs 8:13
13 The fear of Yahweh is to hate evil. I hate pride, arrogance, the evil way, and the perverse mouth.
Proverbs 10:10
10 One winking with the eye causes sorrow, but a chattering fool will fall.
Proverbs 10:14
14 Wise men lay up knowledge, but the mouth of the foolish is near ruin.
Proverbs 10:31
31 The mouth of the righteous produces wisdom, but the perverse tongue will be cut off.
Proverbs 18:6-7
Ecclesiastes 10:12
12 The words of a wise man’s mouth are gracious; but a fool is swallowed by his own lips.
James 3:6-8
6 And the tongue is a fire. The world of iniquity among our members is the tongue, which defiles the whole body, and sets on fire the course of nature, and is set on fire by Gehenna.
7 For every kind of animal, bird, creeping thing, and sea creature, is tamed, and has been tamed by mankind;
8 but nobody can tame the tongue. It is a restless evil, full of deadly poison.