Well, I'm probably going to be accused of crackpottery, but here goes:
My concept of God is an infinite continuum of everything that will be, and everything that is. It is the "beginning," a state of latent but infinite potential; Every thought, every passion, every fear, every life experience, every moment in history, every world, every universe, every possibility, exists in this infinite "pleroma" latently, where space and time do not exist--but becomes manifest in an infinite multi-verse of universes of incomprehensible complexity, grandeur, and beauty--with different laws of physics; most being unimaginable to the human mind.
I believe every aspect of ourselves: our thoughts, desires, actions, lives; are facets, pieces, parts to this infinite pleroma, that eventually "return."..