Albert Barnes Commentary Proverbs 30:3

"And I have not learned wisdom, Neither have I the knowledge of the Holy One." — Proverbs 30:3 (ASV)

He found, when he looked within, that all his learning was as nothing. He had heard of God only by the hearing of the ear (Job 42:5), and now he discovered how little that availed.

The holy—The Holy One. Compare Proverbs 9:10.