Philip K. Dick - The Divine Invasion

In The Divine Invasion, Philip K. Dick asks: What if God — or a being called Yah — were alive and in exile on a distant planet? How could a second coming succeed against the high technology and finely tuned rationalized evil of the modern police state?

The Divine Invasion "blends Judaism, Kabalah, Zoroastrianism, and Christianity into a fascinating fable of human existence"