Proverbs 13:3

The one who guards his mouth protects his life;
the one who opens his lips invites his own ruin.

Proverbs 21:23

The one who guards his mouth and tongue
keeps himself out of trouble.

Proverbs 12:13

An evil man is trapped by his rebellious speech,
but a righteous one escapes from trouble.

Proverbs 18:7

A fool’s mouth is his devastation,
and his lips are a trap for his life.

Proverbs 18:21

Life and death are in the power of the tongue,
and those who love it will eat its fruit.

For the choir director, for Jeduthun. A Davidic psalm.I said, “I will guard my ways
so that I may not sin with my tongue;
I will guard my mouth with a muzzle
as long as the wicked are in my presence.”

Proverbs 10:19

When there are many words, sin is unavoidable,
but the one who controls his lips is wise.

Proverbs 20:19

The one who reveals secrets is a constant gossip;
avoid someone with a big mouth.

Matthew 12:36-37

I tell you that on the day of judgment people will have to account for every careless word they speak.

James 1:26

If anyone thinks he is religious without controlling his tongue, then his religion is useless and he deceives himself.

James 3:2-12

for we all stumble in many ways. If anyone does not stumble in what he says, he is a mature man who is also able to control his whole body.

Treasury of Scripture Knowledge

Summary