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The bible says your soul/spirit goes to God. It doesn't "sleep". Even when you sleep, you dream, you think, the mind is active.
"To be absent of the body is to be with God"
So which is it?
Could it possibly be both?
The obvious answer is that "His ways are not our ways"
and just as soon as each and everyone of us accept that fact that by no means have we now nor will we ever be able to comprehend the presence and knowledge of God in His awesome fullness, at least not on this side of eternity, the body of Christ as a whole will be a far better people because of it.