God is an idea. Just as the body you now have is the materialization of an idea - the idea of self within physical reality. The idea of god is that of creation. Not 'the' creator of the physical universe but the idea of creation within each of us. The idea of 'jesus' or 'buddha' or 'odin' or nothing at all is a creation of self - which is why they exist, in that they have been created, and are being perpetuated, by self.

God only exists through our own existence, just as gender and personality are also assigned. Your personal god then is what you want, what you expect, what you have come to realize, and so will forever change as your ideas of god and self change.