Jacob of Nisibis

Saint Jacob of Nisibis (Syriac: ܝܥܩܘܒ ܢܨܝܒܢܝܐ, Yaʿqôḇ Nṣîḇnāyâ; Greek: Ἅγιος Ἰάκωβος Ἐπίσκοπος Μυγδονίας; Armenian: Յակոբ Մծբնայ Yakob Mtsbnay), also known as Saint Jacob of Mygdonia, Saint Jacob the Great, and Saint James of Nisibis, was a hermit, a grazer and the Bishop of Nisibis until his death.

He was lauded as the "Moses of Mesopotamia", and was the spiritual father of the renowned writer and theologian Saint Ephrem the Syrian. Saint Jacob was present at the first ecumenical council at Nicaea, and is venerated as a saint by the Church of the East, Eastern Orthodox Church, Oriental Orthodox Church, Roman Catholic Church, and Eastern Catholic Churches.