The depth saith - This is a beautiful personification. The object of this verse and the following is, to show that wisdom cannot be found in the deepest recesses to which man can penetrate, nor purchased by anything which man possesses. It must come from God only. The word "depth" here (תהום tehôm) means properly a wave, billow, surge; then a mass of waters, a flood, or the deep ocean, Deuteronomy 8:7; Genesis 7:11; Psalm 36:6; and then a gulf, or abyss. It refers here to the sea, or ocean; and the idea is, that its vast depths might be sounded, and true wisdom would not be found there.

The depth saith, It is not in me - Men may dig into the bowels of the earth, and there find gold, silver, and precious stones; but these will not give them true happiness.
The sea saith, It is not with me - Men may explore foreign countries, and by navigation connect as it were the most distant parts of the earth, and multiply the comforts and luxuries of life; but every voyage and every enjoyment proclaim, True happiness is not here.

The depth saith, it is not in me,.... That is, the deep places of the earth, that are dug in it, the mines, and the like, could they speak, they would say there are no metal, nor minerals, no rich treasures of gold and silver ore, of pearls and precious stones, in the bowels of it, that are of the value of wisdom, or to be compared to it:
and the sea saith, it is not with me; had that a voice to speak, it would freely declare, that there is nothing in its vast compass, at the bottom of it, or to be got out of it, as corals that grow in it, and pearls fished from thence, after mentioned, that are a sufficient price for wisdom. Some understand these words, the former part of miners and colliers, and such sort of men, that dig and live in the depths of the earth; and the latter part of mariners, that are employed on the sea, who are generally ignorant and carnal men, and void of the knowledge of wisdom in every view of it; but the sense first given is best.

The depth - This is not to he found in any part of the sea, though a man may dig or dive ever so deep to find it, nor to be learned from any creature.