Charles Ellicott Commentary Job 36:9

"Then he showeth them their work, And their transgressions, that they have behaved themselves proudly." — Job 36:9 (ASV)

Then he sheweth them their work. —the true nature of their conduct and their transgressions, that they have behaved themselves proudly. This is Elihu’s special doctrine, that God’s chastisements are by way of discipline, to reform the future rather than to chastise the past.