Ka

Egyptian religious texts describe every person as accompanied through life by a ka, a vital double created at birth, sometimes said to be shaped on a potter's wheel by the god Khnum alongside the physical body itself. In life the ka is inseparable from the person it animates; death is described as "going to one's ka," a phrase treating the ka not as something acquired at the moment of death but as something the deceased rejoins, having been briefly parted from it by dying.

What makes the ka distinctive among the world's multiple-soul concepts is how directly its survival depends on the living. Egyptian funerary religion is built substantially around keeping the ka fed: tomb chapels were provisioned with offerings of bread, beer, meat and drink, either real or, when resources ran short, depicted in relief and recited as a spoken formula understood to sustain the ka by the power of the words alone. Professional ka-priests, hem-ka, were retained by wealthy families specifically to keep this cult running after the family itself could no longer attend, a role that in some cases was endowed to continue for generations.

The tomb itself could be called the ka's house, per-ka, underlining that the whole architecture of Egyptian funerary practice, offering chapels, false doors through which the ka was thought to pass to receive its food, statues built to serve as an alternative resting place should the mummy itself be destroyed, exists substantially to give the ka somewhere to live and something to live on.

The practical demands of sustaining a ka indefinitely shaped Egyptian funerary religion into something closer to an ongoing institution than a single ceremony. A wealthy family could endow agricultural land or income specifically to fund offerings at a tomb chapel, hiring ka-priests, hem-ka, whose profession was to perform the offering ritual on a schedule, sometimes for generations after the original family had died out and could no longer perform the rites themselves.

Egyptian funerary texts also supply a fallback for when the living offering economy inevitably failed, as endowments lapsed or dynasties fell: an offering formula, the hetep-di-nesu, inscribed on tomb walls and stelae, invoking the king's favour to provide the deceased with bread, beer, oxen, fowl and every good and pure thing by the recitation of the words alone, on the theory that the spoken or even merely inscribed formula carried real sustaining power independent of an actual meal being physically present. This is one of the clearer instances in Egyptian religion of language itself being treated as efficacious rather than merely descriptive.

Tomb statues of the deceased served a related function, as an alternative body the ka could inhabit should the mummy be destroyed, robbed or otherwise lost, spreading the risk of the ka's continued survival across more than one physical anchor. Taken together, the offering cult, the endowed priesthood, the recited formula and the substitute statue represent a remarkably comprehensive set of institutional responses to a single religious problem: keeping a vital force alive that, by definition, could no longer feed itself.