'God is the infinite, necessarily existing, unique substance of the universe. There is only one substance in the universe; it is God; and everything else that is, is in God.'
http://plato.stanford.edu/entries/spinoza/#GodNat
God is not a being, a creator, or a man in the sky. That's like describing an elephant with the intelligence of an ant. God is everything and everywhere, everything is god. I am god, you are god, we are all god, this joint is god too, and so is the fire and the smoke, and the universe its in.
God is everything, and therefore nothing meaningful.