Origen

“ For it is impossible that the good which is the result of accident, or of communication, should be like that good which comes by nature; and yet the former will never be lost by him who, so to speak, partakes of the “living” bread with a view to his own preservation. ”

“ If any one, however, who has leisure for the examination of the sacred writings, should collect together from all sources and form into one body of doctrine what is recorded concerning the origin of evil, and the manner of its dissolution, he would see that the views of Moses and the prophets regarding Satan had not been even dreamed of either by Celsus or any one of those whose soul had been dragged down, and torn away from God, and from right views of Him, and from His word, by this wicked demon. ”

“ But every one who prefers vice and a vicious life, is (because acting in a manner contrary to virtue) Satanas, that is, an “adversary” to the Son of God, who is righteousness, and truth, and wisdom. [3] With more propriety, however, is he called “adversary,” who was the first among those that were living a peaceful and happy life to lose his wings, and to fall from blessedness ”