We tend to think of objects as self-contained things that move through something else we call spacetime, but this distinction may not be fundamental. We may actually be seeing something fundamentally changeless in excited states.
The human mind itself may create the illusion of separation from God or Ultimate Reality, and all other dualities. But how? And why?
We often think that the "devil" is something or someone else, pointing fingers elsewhere, but what if we look within?
Consciousness may be the "inner" experiential (spiritual) side of the "outer" material (physical) cosmos, these being two irreducible aspects of One thing.