Marcus Diadochus (el|Mάρκος ὁ διάδοχος) was a Christian writer of the fourth century.[1]
His name is at the head of a "Sermon against the Arians" (Greek τοῦ μακαρἰoυ Mάρκου τοῦ Διάδοχου κατὰ Ἀρειανῶν λόγος, Latin Beati Marci Diadochi Sermo contra Arianos).[2] It was discovered by Johann Rudolf Wettstein in a manuscript codex of St. Athanasius at Basel and published by him at the end of his edition of Origen.[3] Another version of the same work was lent by Galliciolli to Andrea Gallandi and published in the Veterum Patrum Bibliotheca, V (Venice, 1765–1781). This is the text in Patrologia Graeca.[1] [4]
The sermon quotes and expounds the usual biblical texts,[5] and answers difficulties.[6] [1]
Diadochus, Bishop of Photike in Epirus in the fifth century, is a different person, author of a "Sermon on the Ascension" and of a hundred "Chapters on Spiritual Perfection";[4] whom Victor Vitensis praises in the prologue of his history of the Vandal persecution.[7] The two are often confused, as Migne does.[1]
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