Then he showeth them their work - What their lives have been. This he does either by a messenger sent to them Job 33:23, or by their own reflections Job 33:27, or by the influences of his Spirit leading them to a proper review of their lives. The object of their affliction, Elihu says, is to bring them to see what their conduct has been, and to reform what has been amiss. It should not be interpreted either as proof that the afflicted are eminently wicked, as the friends of Job maintained, or as furnishing an occasion for severe reflections on the divine government, such as Job had indulged in. It is all consistent with an equitable and kind administration; with the belief that the afflicted have true piety - though they have wandered and erred; and with the conviction that God is dealing with them in mercy, and not in the severity of wrath. They need only recal the errors of their lives; humble themselves, and exercise true repentance, and they would find afflictions to be among even their richest blessings.

Transgressions that they have exceeded - Or, rather, "he shows them their transgressions that they have been very great"; that they have made themselves great, mighty, strong - יתגברוּ yitgâbarû. The idea is, that their transgressions had been allowed to accumulate, or to become strong, until it was necessary to interpose in this manner, and check them by severe affliction. All this was consistent, however, with the belief that the sufferer was truly pious and might find favor if he would repent.

Job 36:9 Parallel Commentaries

Whether the Judicial Power Corresponds to Voluntary Poverty?
Objection 1: It would seem that the judicial power does not correspond to voluntary poverty. For it was promised to none but the twelve apostles (Mat. 19:28): "You shall sit on twelve seats, judging," etc. Since then those who are voluntarily poor are not all apostles, it would seem that the judicial power is not competent to all. Objection 2: Further, to offer sacrifice to God of one's own body is more than to do so of outward things. Now martyrs and also virgins offer sacrifice to God of their …
Saint Thomas Aquinas—Summa Theologica

Job
The book of Job is one of the great masterpieces of the world's literature, if not indeed the greatest. The author was a man of superb literary genius, and of rich, daring, and original mind. The problem with which he deals is one of inexhaustible interest, and his treatment of it is everywhere characterized by a psychological insight, an intellectual courage, and a fertility and brilliance of resource which are nothing less than astonishing. Opinion has been divided as to how the book should be …
John Edgar McFadyen—Introduction to the Old Testament