What to Tell Children About God by Alan Watts.
God also likes to play hide-and-seek, but because there is nothing outside God, He has no one but himself to play with. But He gets over this difficulty by pretending that He is not Himself. This is His way of hiding from Himself. He pretends that He is you and I and all the people in the world, all the animals, all the plants, all the rocks, and all the stars. In this way He has strange and wonderful adventures, some of which are terrible and frightening. But these are just like bad dreams, for when He wakes up they will disappear.