Daniel 4:25-26

You will be driven from human society, and you will live in the fields with the wild animals. You will eat grass like a cow, and you will be drenched with the dew of heaven. Seven periods of time will pass while you live this way, until you learn that the Most High rules over the kingdoms of the world and gives them to anyone he chooses. But the stump and roots of the tree were left in the ground. This means that you will receive your kingdom back again when you have learned that heaven rules.