Proverbs 13:3
He who keeps his mouth (watches what he says) keeps his life. He who opens wide his lips (speaks thoughtlessly) will have destruction.
Proverbs 21:23
He who guards his mouth and holds his tongue stays out of trouble.
Proverbs 12:13
The wicked is snared by the transgression of his lips. The righteous will depart from trouble.
Proverbs 18:7
A fool's mouth is his ruin. His lips are the snares of his life.
Proverbs 18:21
Death and life are in the power of the tongue. Those who love it will eat the fruit.
Psalm 39:1
([Psalm of David]) I said: I will guard my ways that I may not sin with my tongue. I will guard my mouth as with a muzzle while the wicked are in my presence.
Proverbs 10:19
Sin does not hide from a multitude of words. The wise controls his lips.
Proverbs 20:19
A gossip reveals secrets. So avoid a man who speaks flattering words.
Matthew 12:36-37
I tell you there will be an account in the Judgment Day for every careless word that men say.
James 1:26
If any man thinks he is religious, while he does not control his tongue but deceives his heart, this man's religion is vain (worthless) (useless).
James 3:2-12
We all stumble in many things. If any do not stumble in word, he is a perfect man, able to restrain (control) the whole body.