Sabellian, a believer in Sabellianism, the nontrinitarian belief that the Father, Son and Holy Spirit are different modes or aspects of one God, rather than three distinct persons in God Himself
For instance, in the dispute with Eustathius of Antioch, who opposed the growing influence of Origen and his practice of an allegorical exegesis of scripture, seeing in his theology the roots of Arianism, Eusebius, an admirer of Origen, was reproached by Eustathius for deviating from the Nicene faith, who was charged in turn with Sabellianism.
Patripassianism was referred to as a belief ascribed to those following Sabellianism, after its founder Sabellius, especially by the chief opponent Tertullian.