Heretical Christian doctrine founded in the 2nd century by Theodotus of Byzantium, according to which Christ was only a man that Dios adopted as a son at the time of his baptism by San Juan Bautista in the Jordan River. Despite the excommunication of Theodotus by towards the year 198 Pope Victor I, ideas continued spreading mostly in Rome, cosmopolitan centre of all races, theories and religions of the time. In Hispania in the 8th century Archbishop Elipando de Toledo, Bishop Félix de Urgel defends it. Elipando living in Muslim wants to negotiate with them to which Christ was a prophet and only a man, therefore argues that in his human nature was adopted as son of God, but in his divine nature itself was the son of God. Against this theory of Elipando wrote the Beatus of Liébana with Osma the Apologeticum Eterio adversus Elipandum.
