A sect in the third century that embraced the opinions of Sabellius, a philosopher of Egypt, who openly taught that there is but one person in the Godhead.
The Sabellians maintained that the Word and the Holy Spirit are only virtues, emanations, or functions of the Deity; and held that he who is in heaven is the Father of all things; that he descended into the Virgin, became a child, and was born of her as a son; and that, having accomplished the mystery of our salvation, he diffused himself on the apostles in tongues of fire, and was then denominated the Holy Ghost. This they explained by resembling God to the sun; the illuminated virtue or quality of which was the Word, and its warming virtue the Holy Spirit. The Word, they taught, was darted, like a divine ray, to accomplish the work of redemption; and that, being reascended to heaven, the influences of the Father were communicated after a like manner to the apostles.
Charles Buck (1771-1815) was an English Independent minister, best known for the publication of his “Theological Dictionary”. According to the “Dictionary of National Biography”, a Particular Baptist minister named John C. Ryland (1723-1792) assisted Buck by writing many of the articles for the aforementioned publication. One may conclude, based not only Buck’s admiration for his friend Ryland, but also on the entries in his Theological Dictionary, that he stood head and shoulders with the High-Calvinists of his day.