St. Bernard (c. 1140): “Flee from pride, my Brethren… Pride is the beginning of every sin (Ecclus. X. 15); pride it was that so speedily thrust even Lucifer himself into eternal night, though he had shone more brilliantly than all the stars! Pride it was that transformed into a demon, not simply an angel, but the first of all the angels. And, forthwith, through jealous hate, he [the devil] brought forth in man the iniquity he had conceived in his own heart, deluding him that tasting the forbidden tree he would become as God, knowing good and evil (Gen. iii. 5).”
Pope St. Damasus I, Council of Rome, 382, Can. 6: “We anathematize those who say there are two Sons, one eternal, and the other after the assumption of flesh from the Virgin.”
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