These in turn split into two principal groups - the Adoptianists and the Modalists - the former holding Christ to be the man chosen of God, on whom the Holy Spirit rested in a quite unique sense, and who after toil and suffering, through His oneness of will with God, became divine, the latter maintaining Christ to be a manifestation of God Himself.
Both groups had their scientific theologians who sought to vindicate their characteristic doctrines, the Adoptianist divines holding by the Aristotelian philosophy, and the Modalists by that of the Stoics; while the Trinitarians (Tertullian, Hippolytus, Origen, Novatian), on the other hand, appealed to Plato.
The strict Modalists, whom Calixtus had excommunicated along with their most zealous opponent Hippolytus, were led by Sabellius.
How would you define modalists? Add your definition here.