5 Counsel in the heart of man is like deep water; but a man of understanding will draw it out.
Proverbs 20:5 Cross References - JPS_ASV_Byz
Psalms 64:6
6 (64:7) They search out iniquities, they have accomplished a diligent search; even in the inward thought of every one, and the deep heart.
Proverbs 18:4
4 The words of a man's mouth are as deep waters; a flowing brook, a fountain of wisdom.
1 Corinthians 2:11
11 For who among men knoweth the things of a man, save the spirit of the man, which is in him? even so the things of God none knoweth, save the Spirit of God.