A man’s, i.e. a wise man’s, as the next clause explains this; who is worthy of the name and hath the understanding of a man in him. This Hebrew word ofttimes notes an eminent or excellent person, and therefore is opposed to Adam, which designs any ordinary man.
As deep waters; full of deep wisdom.
The well-spring of wisdom as a flowing brook; that wisdom which is in his heart is continually pouring forth wise and good counsels.