"really is"
Well.. that is speculation to a certain extent.
But my morals, ultimately come from my conscious or that inner voice. Sometimes that voice my irrationally say things, that could be the devil on my shoulder, but most of the time that inner voice forces you to do good, by playing with feelings such as guilt, empathy and compassion. That could be god on my shoulder. But ultimately, I as myself process these two voices and act on my own accord.
I think the mind is very deep, and if god is real, i'm certain that he is inside every one of us.