I am {d} clean without transgression, I am innocent; neither is there iniquity in me.

(d) He repeats Job's words, by which he protested his innocency in various places, but especially in the 13th, 16th and 30th chapters.

Wesley's Notes

33:9 Clean - Not absolutely, for he often confesses himself to be a sinner, but no such transgression, as might give God just occasion to punish him so severely, as is implied, where he blames God for finding occasions against him, implying that he had given him none by his sins. And thus far Elihu's charge was just, and herein it differs from the charge of Job's three friends, who often accuse him, for asserting his own innocency; although they did it, because they thought him an hypocrite, whereas Elihu does it upon other grounds, even because Job's justification of himself was accompanied with reflections upon God.

Jamieson-Fausset-Brown Bible Commentary

9. clean-spotless.

Matthew Henry's Concise Commentary

33:8-13 Elihu charges Job with reflecting upon the justice and goodness of God. When we hear any thing said to God's dishonour, we ought to bear our testimony against it. Job had represented God as severe in marking what he did amiss. Elihu urges that he had spoken wrong, and that he ought to humble himself before God, and by repentance to unsay it. God is not accountable to us. It is unreasonable for weak, sinful creatures, to strive with a God of infinite wisdom, power, and goodness. He acts with perfect justice, wisdom, and goodness, where we cannot perceive it.