God is an uncreated Spirit without distinction on the basis of created material but since the human soul is made in the image of that Spirit God can be said to exhibit what we would recognize as person-like characteristics, though at a level vastly beyond what we can comprehend. God is not any more 'in' any given part of the physical universe than in any other part.
That's the claim, but how do you know it's true? What's the evidence?
None. It's a matter of faith. Always has been, always will be. This thread is pointless, you can't discuss that particular question in any meaningfull way. But thanks to Nathan for a beautifull definition anyway.