Elijah, Eliya, or Elias of Nisibis was an Assyrian cleric of the Church of the East, who served as bishop of Beth Nuhadra (1002–1008) and archbishop of Nisibis (1008–1046). He has been called the most important Christian writer in Arabic—or even throughout non-Christian Asia—during the 11th century. He is best known for his Chronography, which is an important source for the history of Sassanid Persia.

Metropolitanate of Adiabene was an East Syriac metropolitan province of the Church of the East between the 5th and 14th centuries, with more than fifteen known suffragan dioceses at different periods in its history. Although the name Hadyab normally connoted the region around Erbil and Mosul in present-day Iraq, the boundaries of the East Syriac metropolitan province went well beyond the Erbil and Mosul districts. Its known suffragan dioceses included Beth Bgash and Adarbaigan, well to the east of Adiabene proper.