Quite true.. What do "we" know of dimensions?..... "nothing".. We surmise there be a thing like dimensions, they seem to add up to human mathematics.. But human mathematics could be so flawed its like cave art to photography..
Its possible being a "the spirit" don't even NEED shape to function well.. Maybe shape itself is redundant or limiting, and linear like thinking.. Humans are so addicted to flesh mentally.. it can be an obsession.. Idolatry seems to be primitive spirituality.. needing an "object" to hold or "observe" as a teddy bear.. to a waif..
[.. Our concept of what is "physically" possible is limited by our vision and reasoning ..]
I agree... unless we expand our thoughts to things on this earth that do not need shape.. like air or water.. Air appears to be one thing when it is many things(gases) and particles floating in it.. Water can be solid, liquid or gaseous.. itself composed of two gases available in AIR..
The bible uses both to model spirit as metaphors.. Merely metaphors but not the real thing.. Air and water could be primitive examples of what spirit is, or may be like, also.. I posit the human body itself could be merely a metaphor of what the spirit might be in some aspects.. Eyes, Ears, the NOSE, Taste, the skin(feeling), shapely identity, and more could all be pointers or object lessons toward the real thing spiritually..
What IF HELL is being limited to a "human like" body for eternity?.. BUT missing the REAL THING.. Being limited to the "picture" of the real thing BUT denied the thing itself.. Whatever THAT IS... And human life is like winning or possessing a lottery ticket to untold wealth but throwing it in the trash..