Proverbs 4:24 Put away from you crooked speech, and put devious talk far from you.
Proverbs 10:14 The wise lay up knowledge, but the mouth of a fool brings ruin near.
Proverbs 10:19 When words are many, transgression is not lacking, but whoever restrains his lips is prudent.
Proverbs 13:3 Whoever guards his mouth preserves his life; he who opens wide his lips comes to ruin.
Proverbs 27:2 Let another praise you, and not your own mouth; a stranger, and not your own lips.
James 3:10 From the same mouth come blessing and cursing. My brothers, these things ought not to be so.