Matthew Poole and continuators on Proverbs 18:4

4 The words of a mans mouth are as deep waters , and the well-spring of wisdom as a flowing brook .

i. e. A wise mans, as the next clause explains this, who is worthy of the name, and hath the understanding of a man in him. This Hebrew word oft-times notes an eminent or excellent person, and therefore is opposed to Adam, which designs any ordinary man.

Full of deep Wisdom

That Wisdom which is in his heart is continually pouring forth wise and good counsels.

Marginal references: Chap. 20. 5.