Marcion of Sinope
In 144, the Church in Rome expelled Marcion of Sinope. He thereupon set up his own separate ecclesiastical organization, later called Marcionism. Like the Gnostics, he promoted dualism. Unlike the Gnostics, however, he founded his beliefs not on secret knowledge (gnosis) but on the vast difference between what he saw as the "evil" deity of the "Old Testament" and the God of love of the "New Testament", on which he expounded in his "Antithesis". Consequently, Marcionists were vehemently anti-Judaist in their beliefs. They rejected the Jewish-Christian Gospel according to the Hebrews (see also Jewish-Christian Gospels) and all the other Gospels with the single exception of the Gospel of Marcion, which appears to be a redacted version of the Gospel of Luke.