Abstract
Mammisi theology in Greco-Roman temples is centered on the image of the child-god. Son of the temple's divine couple, whether Horsamtous at Edfu, Harsiésis at Philae or Ihy at Dendera, the divine child is considered to be his father's successor. This succession can be expressed using different vocabularies. Identified with his solar father, the child enters his cycle at the moment of morning to become the father who will produce a new child. In this way, the birth of a child guarantees the cosmic continuity of cycles. But as a son of his father, succession can also be expressed in terms of earthly royalty. In this case, it's a question of conferring on the child the function, the throne, the scepter of his father. To achieve this goal, a number of deities will intervene to carry out actions that are usually performed for the pharaoh, whether in a purely terrestrial sphere or a supraterrestrial one. Thoth, for example, will write theimit-per and annals of the new " king ". The birth itself of the young god is described according to a scenario that, since at least the Middle Kingdom, has been used to recount the divine birth of the pharaoh. By transferring the stories, rituals and epithets of the Pharaoh to the son-god, the latter becomes the Pharaoh himself, reigning over Egypt and the cosmos.
