Sabellianism

Christian heresy that was a more developed and less naive form of Modalistic Monarchianism (see Monarchianism); it was propounded by Sabellius (fl. c. 217–c. 220), who was possibly a presbyter in Rome. Little is actually known of his life because the most detailed information about him was contained in the prejudiced reports of his contemporary, Hippolytus, an anti-Monarchian