Not the infinite God of the Bible; All things exist in God's Infinite Mind like a "thought". It is God's power and will that "holds everything together":
He is before all things, and in him all things hold together. (Col. 1:17 NIV)
"for in Him we live and move and have our being, as also some of your own poets have said,`For we are also His offspring.' (Acts 17:28 NKJ)
God doesn't live in a place, all places exist in Him:
"But will God indeed dwell on the earth? Behold, heaven and the heaven of heavens cannot contain You. How much less this temple which I have built! (1 Ki. 8:27 NKJ)
Within God exists the "multiverse", the "heavenly realms where angels and spirits dwell", the "earthly realms where the humans and the physical stars and planets are", and "the unseen realm of Hades."
These realms are like parallel worlds separated from each other by a "dimensional barrier".
Isaiah 66:1
This is what the LORD says: Heaven is my throne, and earth is my footstool. Where could you possibly build a house for me? And where would my resting place be?