Matthew Poole and continuators on Proverbs 18:21

21 Death and life are in the power of the tongue , and they that love it shall eat the fruit thereof .

Are brought upon men by the good or bad use of their tongues.

Either 1. The Tongue, that love and use much talking, which is oft censured as a sin, and a cause of mischief. See Prov. 10. 19. Iam. 1. 19. Or 2. The use of their tongue in either of those ways, which are plainly supposed in the former clause of the verse: they who do not only speak well, which a wicked man may somtimes do, or speak ill, which a good man may possibly do, but do love, and therefore accustom themselves to speak well or ill.

Shall receive either good or evil according to the quality of their Speeches.