Akh

Akh is a term used to describe the spiritual essence of a person and the first of three components that make a complete person, according to traditional Followers of Set lore.

Overview
Upon death, the akh is the first component to enter afterlife. A Setite's akh departs to the afterlife when a sire shares the dark water of the river that flows between worlds with her childe. This provides the Serpent with a foothold in both the living world and Duat.