The Council of Frankfurt Part 1: The Condemnation of Adoptionism
The Council of Frankfurt in 794 AD played a pivotal role in defending orthodox Christology against the growing influence of Adoptionism, a heresy that claimed Jesus, in his humanity, was "adopted" as the Son of God rather than being the eternal Son from the beginning. The council, convened by Charlemagne with the support of Pope Hadrian I, firmly rejected this teaching and reaffirmed the doctrine of Christ as one divine person with two natures—fully God and fully man from the moment of his incarnation. The rejection of Adoptionism was not a political move but a theological necessity grounded in Scripture, the teachings of the early Church Fathers, medieval theologians, Protestant Reformers, and evangelical scholars throughout history. The Council of Frankfurt preserved the doctrine of Christ’s eternal sonship, ensuring that the Church remained faithful to the truth revealed in the Bible and the Nicene-Chalcedonian tradition. The Rise of Adoptionism and the Need for the Counci...