"Certain wise men of old wrote concerning them, and say in their [sacred] books, that angels came down from heaven, and mingled with the daughters of Cain, who bare unto them these giants. But these [wise men] err in what they say. God forbid such a thing, that angels who are spirits, should be found committing sin with human beings. Never, that cannot be. And if such a thing were of the nature of angels, or Satans, that fell, they would not leave one woman on earth, undefiled... But many men say, that angels came down from heaven, and joined themselves to women, and had children by them. This cannot be true. But they were children of Seth, who were of the children of Adam, that dwelt on the mountain, high up, while they preserved their virginity, their innocence and their glory like angels; and were then called 'angels of God.' But when they transgressed and mingled with the children of Cain, and begat children, ill-informed men said, that angels had come down from heaven, and mingled with the daughters of men, who bare them giants."