Think of Consciousness as you do of Energy. The amount of each is a constant in the universe. The first law of spirituality matches that of thermodynamics.
Your "devil's" greatest trick was to convince you of the reality and for some the finality of death.
The idea that death is real and the demons who spawned this idea are fabrications of Second Dimension points of Consciousness designed to redirect your attention toward your Inner Lives and away from the Garden, which is for tending, and not for exploiting and mistreating the other conscious inhabitants.
All of this is in keeping with your Sacred Texts