A comprehensive and authoritative account of the ''heretic'' Marcion this volume traces the development of the concept and language of heresy in the setting of an exploration of second-century Christian intellectual debate. Judith M. Lieu analyses accounts of Marcion by the major early Christian polemicists who shaped the idea of heresy including Justin Martyr Irenaeus Tertullian Epiphanius of Salamis Clement of Alexandria Origen and Ephraem Syrus. She examines Marcion''s ''Gospel'' ''Apostoliko