Lactantius

“ They are foolish, therefore, who imagine that the gods were born of marriage, since the sexes themselves, and the intercourse between them, were given to mortals by God for this reason, that every race might be preserved by a succession of offspring. ”

“ Those, therefore, who are reckoned as gods, since it is evident that they were born as men, and that they begat others, were plainly mortals: but they were believed to be gods, because, when they were great and powerful kings, on account of the benefits which they had conferred upon men, they deserved to obtain divine honours after death ”