Isis Unveiled, vol. 2, p. 143

The following Gnostic account of the birth and death of Christ is taken from the description given by Theodoret and used by King in his Gnostics, together with additions from Epiphanius and Irenaeus:

Achamoth, afflicted with the evils which befall humanity, notwithstanding her protection, beseeches the celestial mother Sophia — her antitype— to prevail on the unknown DEPTH to send down Christos (the son and emanation of the "Celestial Virgin") to the help of perishing humanity. Ilda-Baoth and his six sons of matter are shutting out the divine light from mankind. Man must be saved. Ilda-Baoth had already sent his own agent, John the Baptist, from the race of Seth, whom he protects — as a prophet to his people; but only a small portion listened to him — the Nazarenes, the opponents of the Jews, on account of their worshipping Iurbo-Adunai. Achamoth had assured her son, Ilda-Baoth, that the reign of Christos would be only temporal, and thus induced him to send the forerunner, or precursor. Besides that, she made him cause the birth of the man Jesus from the Virgin Mary, her own type on earth, "for the creation of a material personage could only be the work of the Demiurgus, not falling within the province of a higher power. As soon as Jesus was born, Christos, the perfect, uniting himself with Sophia (wisdom and spirituality), descended through the seven planetary regions, assuming in each an analogous form, and concealing his true nature from their genii, while he attracted into himself the sparks of divine light which they retained in their essence. Thus, Christos entered into the man Jesus at the moment of his baptism in the Jordan. From that time Jesus began to work miracles; before that, he had been completely ignorant of his mission." 

Ilda-Baoth, discovering that Christos was bringing to an end his own kingdom of matter, stirred up the Jews against him, and Jesus was put to death. When on the Cross, Christos and Sophia left his body and returned to their own sphere. The material body of the man Jesus was abandoned to the earth, but he himself was given a body made up of æther (astral soul). "Thenceforward he consisted of merely soul and spirit, which was the reason why the disciples did not recognize him after the resurrection. In this spiritual state of a simulacrum, Jesus remained on earth for eighteen months after he had risen. During this last sojourn, he received from Sophia that perfect knowledge, that true Gnosis, which he communicated to the very few among the apostles who were capable of receiving the same".