Solomon
Proverbs 10:21ESV·traditional attribution

The lips of the righteous feed many, but fools die for lack of sense.

Matthew Henry Presbyterian @wholebiblehenry

We are here taught how to value men, not by their wealth and preferment in the world, but by their virtue. I. Good men are good for something. Though they may be poor and low in the world, and may not have power and riches to do good with, yet, as long as they have a mouth to speak, that will make them valuable and...

Commenting on Proverbs 10:20-21

John Gill Reformed Baptist @doctorgill

The lips of the righteous feed many,.... Not their bodies; words are but wind, and will not feed; it is not enough to say to the distressed, "be ye warmed and filled", and give nothing; unless this can be understood of obtaining food for others by their prayers, as Jarchi interprets it: but the souls of many; these the righteous feed, by communicating the spiritual...

Jamieson-Fausset-Brown Reformed @jfbcommentary

Fools not only fail to benefit others, as do the righteous, but procure their own ruin (compare Pro 10:11, Pro 10:17; Hos 4:6).