... was the original god of Heliopolis and the Delta side, round to the gulf of Suez, which formerly reached up to Ismailiyeh. How far his nature as the setting sun was the result of his being identified with Ra, is not clear. It may be that he was simply a creator-god, and that the introduction of Ra led to his being unified with him. Those who take the view that the names ... — The Religion of Ancient Egypt • W. M. Flinders Petrie