Proverbs 17:20
He who is crooked of heart will not find goodness, and he who is perverse, by his tongue he will fall into calamity.
Psalm 18:26
To [the] pure you show yourself pure. but to [the] wicked you show yourself shrewd.
Proverbs 3:32
for he who is perverse [is] an abomination of Yahweh, but those who are upright [are] his confidence.
Proverbs 6:12-15
A worthless man, an evil man, goes around with {deceitful speech}.
Proverbs 8:13
The fear of Yahweh [is] hatred of evil, pride, and arrogance and an evil way. And I hate a mouth of perversity.
Proverbs 10:10
The winking of an eye causes trouble, and the foolishness of lips comes to ruin.
Proverbs 10:14
Those who are wise lay up knowledge, but [to] the mouth of the fool, ruin draws near.
Proverbs 10:31
The mouth of the righteous brings forth wisdom, but a tongue of perversity will be cut off.
Proverbs 18:6-7
The lips of a fool will bring strife, and his mouth calls out for a flogging.
Ecclesiastes 10:12
The wise man [wins] favor by the words of his mouth, but the fool is devoured by his own lips.
James 3:6-8
And the tongue [is] a fire! The world of unrighteousness, the tongue, is set among our members, defiling the whole body and setting on fire {the course of human existence}, being set on fire by hell.