Death is just a self-preservation incentive. Once you're dead, there's no longer any need of an incentive to preserve a self that's passed. Then, you're everyone (because who are you now that money, time and self-presentation are obsolete, and *where* are you, exactly? Nowhere. Anywhere.,. Everywhere.)

There is no death, only the memory of once having been driven by fear of what no longer has any meaning besides that one. This actually happens in the last moments of awareness as ego dissolves into unconsciousness, infinitesimally expanding perception of time to infinity and place to everywhere at once, the fourth dimension finally perceived without the aid of psychedelics, which are an excellent tool for overcoming fear of death as well as addiction and self-limitation in any form.

This is the meaning of the New Testament's assertion that death will be overturned and everyone perpetually in glorious magnificent harmony in heaven. There is no need for supernatural causes, only a reframing of traditional concepts of spiritual truth.

Even demons exist, on a non-supernatural level. Demonic possession is an actual experience. It's not an "excuse" for behavior (though it could be falsely claimed as a causal feature), it's a socio-psychological phenomenon misunderstood as beyond causal chains of influence in a natural world. Much of the Bible is true, just not true on a literal level, and greatly misunderstood by most of its adherents.