‘Hear, and I will speak; I will question you, and you make it known to me.’
The words of Job justifying himself were ended, Job 31:40. After that he said no more to that purport. The words of Job judging and condemning himself began, Job 40:4, Job 40:5. Here he goes on with words to the same purport. Though his patience had not its perfect work, his repentance for his impatience had.
Commenting on Job 42:1-6
I have heard of thee by the hearing of the ear,.... From his ancestors, who in a traditionary way had handed down from one to another what they knew of God, his will and worship, his works and ways; and from those who had the care of his education, parents and tutors, who had instilled the principles of religion, and the knowledge of divine things...
When I said, "Hear," &c., Job's demand (Job 13:22) convicted him of being "without knowledge." God alone could speak thus to Job, not Job to God: therefore he quotes again God's words as the groundwork of retracting his own foolish words.