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.
Related Commentaries of Proverbs 30:3
Proverbs 30:3
3 I neither learned wisdom, nor havea the knowledge of the holy.