 Nevertheless, perennial philosophers believe that these traditions all share a single supernatural truth or origin.In Egyptian mythology, Duat is the realm of the dead, an underworld placed beneath the earth and associated with both positive concepts such as fertility and rebirth — personified by the god Osiris — but also negative concepts such as chaos — personified by the snake Apophis.Apophis threatened Maat, the cosmic order that was central to Egyptian religious thought, and that regulated all natural cycles, including death and rebirth.