Post-Apocalyptic Trinities and the Art of Staying Awake

I find it intriguing that death as a beginning is a belief held vigorously by both religious sects and the zombies amongst us. Two querlous groups, both looking beyond the immediate toward a future that may or may not have any basis in cold reality. I wonder how the zealots rationalize their bodies becoming animated post death, a time they mythologize that the soul separates from the physical before traveling the star path. Does the reanimation require the soul to return from the star realm? Is the awakening proof souls cleave off the corpse rather than sleep for eternity or until the postapocalypse, performing a necessary function as do the vulture people? The beings most likely to survive a nuclear holocaust...