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Jabril ibn Bukhtishu 8th century Church of the East physician. •
Jacob Bar-Salibi, most prolific writer in the Syriac Orthodox Church of the twelfth century. •
Jacob of Edessa (c. 640 – 5 June 708) Syriac apologist and philosopher. •
Job of Edessa, a Christian natural philosopher and physician active in Baghdad and Khurāsān under the Abbasid Caliphate. He played an important role in transmitting Greek science to the Islamic world through his translations into Syriac. •
John III of the Sedre theologian. •
John bar Penkaye 7th century historian. == K ==