v. 4. The words of a man's mouth are as deep waters, hard to fathom and exhaust, if he really has something to say, and the well-spring of wisdom as a flowing brook, literally, "a bubbling brook," a fountain of wisdom, rich in content and life-giving in quality.
Related Commentaries of Proverbs 18:4
Proverbs 18:4
4 The words of a man's mouth are as deep waters, and the wellspring of wisdom as a flowing brook.