(The Egyptian Texts, edited with translations)
ably about this time the sun first rose out of the watery abyss of Nu, and shone upon the world and produced day. In early times the sun, or his light, was regarded as a form of Shu. The gods Keb and Nut were united in an embrace, and the effect of the coming of light was to separate them. As long as the sun shone, i.e., as long as it was day, Nut, the Sky- goddess, remained in her place above the earth, being supported by Shu; but as soon as the sun set she left the sky and gradually descended until she rested on the body of the Earth-god, Keb.
[FN#4] Pepi I., l. 466.
The embraces of Keb caused Nut to bring forth five gods at a birth, namely, Osiris, Horus, Set, Isis, and Nephthys. Osiris and Isis married before their birth, and Isis brought forth a son called Horus; Set and Nephthys also married before their birth, and Nephthys brought forth a son named Anpu (Anubis), though he is not mentioned in the legend. Of these gods Osiris is singled out for special mention in the legend, in w