Akh

Their abode is heaven; and the Akh, by contrast with the Ba, does not retain any relation to the body.… It is a deceased, a transcendent being, without earthly or material ties; and, as such, it is the most spiritualized of the various concepts of the dead.

After spending the night asleep in their tombs, the akhs would wake each morning at sunrise and “come forth from the necropolis” to enjoy an ideal life, free from the cares of physical existence.

The akh would later become the state achieved when the ba and ka are rejoined.

If a person’s ka and ba were not reunited and akh failed to develop, then everlasting life would not occur.

Different postmortem aspects of the individual are mentioned in ritual texts, so that it is unclear how they relate to one another: the ka (what leaves the body when death occurs), the ba (the personality of the individual), and the akh (a glorified bodily form).