Proverbs 18:6-7

18:6 The lips of a fool enter into strife,

and his mouth invites a flogging.

18:7 The mouth of a fool is his ruin,

and his lips are a snare for his life.

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.