Proverbs 18:21

Death and life [are] in the power of the tongue,.... Of witnesses, according to the testimony they bear; of judges, according to the sentence they pass; of teachers, according to the doctrine they preach; of all men, who, by their well or ill speaking, bring death or life to themselves and others. Some, by their tongues, by the too free use of them, or falsehood they utter, are the cause of death to themselves and others; and some, by their silence, or by their prudent speech and prevalent intercession, secure or obtain life for themselves and others; yea, judgment at the last day will proceed according to a man's words, "By thy words thou shalt be justified, and by thy words thou shalt be condemned", Matthew 12:37; the tongue is the instrument either of a great deal of good, or of a great deal of evil;

and they that love it shall eat the fruit thereof; that delight to be talkative; that love to use the tongue, whether in a good or in a bad way, shall accordingly be recompensed; shall enjoy the advantages or disadvantages arising from it.