20 The tongue of the righteous is like choice silver.
The heart of the wicked is of little worth. 21 The lips of the righteous feed many,
but the foolish die for lack of understanding.

Matthew Henry's Commentary on Proverbs 10:20-21

Commentary on Proverbs 10:20-21

(Read Proverbs 10:20-21)

The tongue of the just is sincere, freed from the dross of guile and evil design. Pious discourse is spiritual food to the needy. Fools die for want of a heart, so the word is; for want of thought.