A version of Monarchianism holding that the Godhead is a single being, differentiated only into a succession of modes or operations.
(Christianity) A Christian belief which holds that God the Father and God the Son are one in the same, the latter often being termed Patripassianism in that it implies God the Father personally suffered on the Cross.
American Heritage Dictionary of the English Language, 5th Edition
From Sabellius +"Ž -ism, after Sabellius.
Sabellianism Sentence Examples
Gregory, although he has not always escaped the charge of Sabellianism, now holds an undisputed place among the fathers of the church; and although the turn of his mind was practical rather than speculative, he is known to have taken an energetic part in most of the doctrinal controversies of his time.
He detected in his bishop Gnosticism, Manichaeism and Sabellianism, and was convinced that he himself was the champion of pure doctrine against heresy.
2 It was violently controverted by the bishops, notably by Dionysius of Alexandria, and the development in the East of the philosophical doctrine of the Trinity after Origen (from 260 to 320) was very powerfully influenced by the opposition to Sabellianism.
Sabellianism, in fact, became a collective name for all those Unitarian doctrines in which the divine nature of Christ was acknowledged.