Pleroma

Pleroma is a realm of pure and perfect spirit beyond the boundaries of the physical world. It's what commonly is known as afterlife. There are several ways to access it, on it though the Ankh of Osiris, which like a antenna is tuned to the Pleroma's wavelength, and can summon the spirit back from Pleroma and effectively resurrect someone. The other way it via the Astrolabe of Mashallah which created a doorway to Pleroma, and when someone steps through it the spirit and body separate. When the doorway is closed the body and spirit is forever separated, killing anyone why stepped through the doorway.

Several philosophers have tried to document the Pleroma over the time, with various different ways.