The words of the godly are a life-giving fountain; but the words of the wicked conceal violent intentions. Proverbs 10:11

“Do not let any unwholesome talk come out of your mouths, but only what is helpful for building others up according to their needs, that it may benefit those who listen. Nor should there be obscenity, foolish talk, or crude joking, which are out of character, instead, let there be thankfulness to God. A good person produces good things from the treasury of a good heart, and an evil person produces evil things from the treasury of an evil heart.”