Daniel 5:20-21

But when his heart was lifted up and his spirit became hard with pride, he was put down from his place as king, and they took his glory from him: And he was sent out from among the sons of men; and his heart was made like the beasts', and he was living with the asses of the fields; he had grass for his food like the oxen, and his body was wet with the dew of heaven, till he was certain that the Most High is ruler in the kingdom of men, and gives power over it to anyone at his pleasure.