The Book of Daniel, Chapter 4 (Parts 1 and 2)

Nebuchadnezzar recounts a dream of a huge tree that is suddenly cut down at the command of a heavenly messenger. Daniel is summoned and interprets the dream. The tree is Nebuchadnezzar himself, who for seven years will lose his mind and live like a wild beast. All of this comes to pass until, at the end of the specified time, Nebuchadnezzar acknowledges that "heaven rules" and his kingdom and sanity are restored.