Theodoret of Cyrus : "He was deposed from the throne of his kingdom: just as he elevated those he wanted and humbled those he wanted," doing so not altogether by a right decision, so the King and Lord of all gave your father the kingdom as he wanted, but on perceiving him giving vent to an overweening sense of his own importance, running the kingdom in an arrogant and conceited manner, a victim of haughtiness, he deprived him of the royal throne and stripped him of the honor paid him by everyone. Instead of divesting him only of the kingdom, however, he drove him also from normal association, gave him over to insanity and derangement and caused him to live with wild asses and savage beasts, taking on the life of the animals whose ferocity he had imitated. — COMMENTARY ON Daniel 5:20