Sabellian n. (Eccl. Hist.) A follower of Sabellius, a presbyter of Ptolemais in the third century, who maintained that there is but one person in the Godhead, and that the Son and Holy Spirit are only different powers, operations, or offices of the one God the Father.
... things were made. The incarnation of the Logos is reduced to a mere inspiration of the Divine Wisdom, which filled the soul, and directed all the actions, of the man Jesus. Thus, after revolving around the theological circle, we are surprised to find that the Sabellian ends where the Ebionite had begun; and that the incomprehensible mystery which excites our adoration, eludes ... — The History of The Decline and Fall of the Roman Empire - Volume 2 • Edward Gibbon