"Reincarnation. The doctrine of rebirth, believed in by Jesus and the Apostles, as by all men in those days, but denied now by the Christians. All the Egyptian converts to Christianity, Church Fathers and others, believed in this doctrine, as shown by the writings of several. In the still existing symbols, the human-headed bird flying towards a mummy, a body, or “the soul uniting itself with its sahou (glorified body of the Ego, and also the kâmalokic shell) proves this belief. “The song of the Resurrection” chanted by Isis to recall her dead husband to life, might be translated “Song of Rebirth”, as Osiris is collective Humanity. “Oh! Osiris [here follows the name of the Osirified mummy, or the departed], rise again in holy earth (matter), august mummy in the coffin, under thy corporeal substances”, was the funeral prayer of the priest over the deceased. “Resurrection” with the Egyptians never meant the resurrection of the mutilated mummy, but of the Soul that informed it, the Ego in a new body. The putting on of flesh periodically by the Soul or the Ego, was a universal belief; nor can anything be more consonant with justice and Karmic law."
January 1, 1970
https://en.wikiquote.org/wiki/Helena_Blavatsky