34 'Brood of vipers! how are ye able to speak good things—being evil? for out of the abundance of the heart doth the mouth speak. 35 The good man out of the good treasure of the heart doth put forth the good things, and the evil man out of the evil treasure doth put forth evil things. 36 'And I say to you, that every idle word that men may speak, they shall give for it a reckoning in a day of judgment; 37 for from thy words thou shalt be declared righteous, and from thy words thou shalt be declared unrighteous.'
Matthew Henry's Commentary on Matthew 12:34-37
Commentary on Matthew 12:33-37
(Read Matthew 12:33-37)
Men's language discovers what country they are of, likewise what manner of spirit they are of. The heart is the fountain, words are the streams. A troubled fountain, and a corrupt spring, must send forth muddy and unpleasant streams. Nothing but the salt of grace, cast into the spring, will heal the waters, season the speech, and purify the corrupt communication. An evil man has an evil treasure in his heart, and out of it brings forth evil things. Lusts and corruptions, dwelling and reigning in the heart, are an evil treasure, out of which the sinner brings forth bad words and actions, to dishonour God, and hurt others. Let us keep constant watch over ourselves, that we may speak words agreeable to the Christian character.