God's omnipresence doesn't mean that He is located at each location in SPACE. Space itself is a lie. It's an illusion of separation. It's easy to believe God is some great big huge thing so vast that he covers the whole universe, and so, your little spot on planet Earth is... a hair on his knee.
God isn't like that. It's not that PART of God is in one place, while another PART of God is in another. God defies spacetime.
All of God is over here. And, all of God is over there.
There is no compromise in this. It's not that the parts of God over here can't also be over there. It's not that most of Him is over here, with leftover parts over there. This would be true of objects in this world, but it's not true of God. God is not limited in a finite way.
This is what makes God's nature a little difficult to get your head around, because it defies all laws of space and time, separation of locations, boundaries, limits, etc.
The entire 'personality' of God is over here, in this location, fully present, completely fully located there with no lack or limitation or partiality. And to the ego that means, there is no God left to be anywhere else. But God defies the ego. God is ALSO over there, fully, completely, totally present, ALL of Him is over there, as well as over here. Simultaneously.
God transcends spacetime limits. If you were to think of Him in terms of space, you'd have to imagine an extraordinary warping of space, the likes of which you might only conceive of happening in a wormhole or black hole perhaps, there space itself becomes distorted, or two locations share the same space or overlap.
God's foundation of omnipresence is the root reality behind all things. In the "separation from God", we introduced the idea that SOME of what was "over here" was perhaps "not over there". Or that only PART of reality is present. Or that what is in one location, is missing from another location. THAT is what the ego thought system is based on - the OPPOSITE of omnipresence. The idea that there is limitation, lack, an inability to share, isolation, confinement, exclusion, partiality, loss of wholeness, locality and so on.
Particles of matter, including formations as the human body, are merely ideas of this breakdown in omnipresence. They are "localizations" which EXCLUDE what is outside in order to define something exclusive to the inside. "A little fence the Son of God has surrounding himself with" (paraphrase).
The body is an attempt to REJECT a vast majority of what exists, while simultaneously taking EXCLUSIVE possession of one little tiny part - which is the idea of specialness. And this is also why "special relationships" revolve around the body and keeping the body real. The body "disconnects" you from sharing the whole. It asserts that only a tiny PART of yourself is here, while the rest of you is forgotten. Or that there are special things here which are not present anywhere else - uniqueness. And it is this uniqueness that the ego loves to worship. Something that makes you seem DIFFERENT, something about your self that no-one else has. Something that SEPARATES YOU OUT.
This is why the body is always fundamentally a device for separation, even in its most spiritualized form of being used by the mind to try to extend love in the world. The body must go, because it is the "concentration" of "omnipresent-space" which attempts to SHUT OUT the whole in order to focus on the part. The whole (God) and the part (Son/soul) has to be fully united in omnipresence in order that they SHARE fully everything everywhere with each other. Separation from God is merely the attempt to separate part from whole and identify yourself as partial. This is why it has only affected a PART of your mind.
This is also why there cannot be a body of ANY KIND in omnipresent reality, because this would isolate and separate us from each other. We would not be able to SHARE, because bodies are devices that PREVENT sharing.
The unique thing we need to realize, is that while we are very used to living in ISOLATION, trapped in a body, fenced off and kept apart from the rest, this is HIGHLY UNNATURAL. In our natural state, WE ARE EVERYWHERE, we share ALL of creation, WE ARE OMNIPRESENT LIKE GOD. This follows also the law of God which is the Golden Rule. You are IN your brother. Your brother is IN you. God is in everyone. We are all everywhere.
This is why miracles unite you with your brother, and restore the omnipresent reality. You don't merely join or connect or 'touch', your MERGE and OVERLAP and SHARE SPACE. You exist in the same exact location as everyone else, sharing infinity forever.