Proverbs 15:28
The heart of the righteous weighs answers, but the mouth of the wicked gushes out evil.
1 Peter 3:15
But sanctify the Lord God in your hearts; and always be ready to give an answer to everyone who asks you a reason concerning the hope that is in you, with humility and fear:
Proverbs 15:2
The tongue of the wise commends knowledge, but the mouth of fools gush out folly.
1 Kings 3:23-28
Then the king said, "The one says, 'This is my son who lives, and your son is the dead;' and the other says, 'No; but your son is the dead one, and my son is the living one.'"
Proverbs 10:19
In the multitude of words there is no lack of disobedience, but he who restrains his lips does wisely.
Proverbs 13:16
Every prudent man acts from knowledge, but a fool exposes folly.
Proverbs 16:23
The heart of the wise instructs his mouth, and adds learning to his lips.
Proverbs 29:11
A fool vents all of his anger, but a wise man brings himself under control.
Proverbs 29:20
Do you see a man who is hasty in his words? There is more hope for a fool than for him.
Ecclesiastes 5:2
Don't be rash with your mouth, and don't let your heart be hasty to utter anything before God; for God is in heaven, and you on earth. Therefore let your words be few.
Ecclesiastes 5:6
Don't allow your mouth to lead you into sin. Don't protest before the messenger that this was a mistake. Why should God be angry at your voice, and destroy the work of your hands?
Ecclesiastes 10:12-14
The words of a wise man's mouth are gracious; but a fool is swallowed by his own lips.
Matthew 12:34
You offspring of vipers, how can you, being evil, speak good things? For out of the abundance of the heart, the mouth speaks.
Titus 1:10-11
For there are also many unruly men, vain talkers and deceivers, especially those of the circumcision,
James 3:6-8
And the tongue is a fire. The world of iniquity among our members is the tongue, which defiles the whole body, and sets on fire the course of nature, and is set on fire by Gehenna.
2 Peter 2:18
For, uttering great swelling words of emptiness, they entice in the lusts of the flesh, by licentiousness, those who are indeed escaping from those who live in error;