Proverbs 18:4 (BSB)

The words of a man’s mouth are deep waters; the fountain of wisdom is a bubbling brook.

From Proverbs 18. Also in the ESV.

Commentary on Proverbs 18:4

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Proverbs 18:4: The similitudes here seem to be elegantly transposed. 1. The well-spring of wisdom is as deep waters. An intelligent knowing man has in him a good treasure of useful things, which furnishes him with something to say upon all occasions that is pertinent and profitable. This is as deep waters, which make no noise, but never run dry. 2.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Proverbs 18:4: The words of a man's mouth are as deep waters,.... The words of a great and mighty man; of an excellent and valuable man, as Jarchi; or of a wise man, as Aben Ezra. The doctrines which such a man has imbibed, and his heart is full of and his mouth utters, are like to "waters", pure, purifying, and refreshing; to "deep waters", which make...
• Jamieson-Fausset-Brown (Reformed), Commentary Critical and Explanatory on the Whole Bible on Proverbs 18:4: Wise speech is like an exhaustless stream of benefit.
• Geneva Bible Notes (Reformed), Geneva Bible Study Notes on Proverbs 18:4: The words of a man's mouth [are as] deep waters, [and] the wellspring of wisdom [as] a flowing brook. (d) Which can never be drawn empty, but always bring profit.