Psalms 12:3-4

12:3 May the Lord cut off all flattering lips,

and the tongue that boasts!

12:4 They say, “We speak persuasively;

we know how to flatter and boast.

Who is our master?”

Proverbs 6:17

6:17 haughty eyes, a lying tongue,

and hands that shed innocent blood,

Proverbs 12:13

12:13 The evil person is ensnared by the transgression of his speech,

but the righteous person escapes out of trouble.

Proverbs 17:20

17:20 The one who has a perverse heart does not find good,

and the one who is deceitful in speech falls into trouble.

Proverbs 18:21

18:21 Death and life are in the power of the tongue,

and those who love its use will eat its fruit.