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At a comparatively early period in EgyptianhistoryIsis had absorbed the attributes of all the great primitive goddesses, and of all the local goddesses such as Nekhebet, Uatchet, Net, Bast, Hathor, etc., and she was even identified as the female counterpart of the primeval abyss of water from which sprang all life.
Isis also assimilated Sopdet, the personification of Sirius, since Sopdet, rising just before the flooding of the Nile, was seen as a bringer of fertility, and so had been identified with Hathor.
Isis is often depicted with a throne on her head and with wings, meaning ascension, linked with the Phoenix the female bird of resurrection.
Isis belongs to the Ennead of Heliopolis, and according to the Heliopolitan genealogy is a daughter of Seb and Nut, sister and wife of Osiris.
Isis, as mother of Horus, was by extension regarded as the mother and protectress of the pharaoh's.
Isis was depicted as a woman with the solar disk between the cow horns on her head (an analogy with the goddessHathor) or crowned with a thrown, but also with the child Horus sitting on her lap.