Diodorus Siculus
And besides these there are other gods, they say, who were terrestrial, having once been mortals, but who, by reason of their sagacity and the good services which they rendered to all men, attained immortality, some of them having even been kings in Egypt. Their names, when translated, are in some cases the same as those of the celestial gods, while others have a distinct appellation, such as Helius, Cronus, and Rhea, and also the Zeus who is called Ammon by some, and besides these Hera and Hephaestus, also Hestia, and, finally, Hermes [….]
Some of the priests, however, say that Hephaestus was their first king, since he was the discoverer of fire and received the rule because of this service to mankind; for once, when a tree on the mountains had been struck by lightning and the forest near by was ablaze, Hephaestus went up to it, for it was winter-time, and greatly enjoyed the heat; as the fire died down he kept adding fuel to it, and while keeping the fire going in this way he invited the rest of mankind to enjoy the advantage which came from it. – 1.13
neosalexandria 