Horus/Saturn/Cronus/Kumarbi/ Nimrod/UrZababa/Amraphel son of Serapis/Osiris/Asar/Meshkiangkasher. and Isis the Na'amahite daughter of Cana'an married Rhea/Hathor and led the clan of "Horites". In reality he was the son of his father's slayer Seth/Petrus the servant of El-Ra who then took the widow of Osiris as his wife. Both Osiris and Seth/Petrus were sons of Lotan/Apep/Geb son of Shu/Seir. Osiris challenged Seth/Petrus for his inheritance and lost. But the widow raised Harpocrates/Horus the Younger as the son of Osiris not as the son of Seth/Petrus.
When Horus was old enough he castrated Seth/Petrus for violating his mother. Horus then took control of Mount Seir.
The Horites were the Horus King Pharaohs descended from Horus.
Apep attacked El-Ra, but was defeated by Set servant of El-Ra.
In time Horus/Osiris/Serapis took over the role of Ra, and Set came to be unfairly associated with the Apep.
When the Horites had become powerful the Horus Kings began eating their firstborn sons as it was foretold that a firstborn son of Horus would be responsible for ending the Horite kingdom.
A few Horites quit Mount Seir to establish the family of Caphtor led by Eliezer who became the servants of Abraham.
The Idumeans destroyed the Horites and took control of Mount Seir.
Akhenaten tried to restore the ancient monotheistic religion of El-Ra but failed.
Horus was responsible for the birth of Neptune/Poseidon/Anubis and Caphtor the children of Seth the younger as well as the rest of the Giants.
see Kaftorite Nation