Theodore Abu Qurrah

Abū Qurrah was among the earliest Christian authors to use Arabic alongside Abu-Ra'itah of Tikrit, Ammar al-Basri and Abdulmasih al-Kindi.

His works were referenced and reused by other Arab Christian writers such as the eleventh century bishop Sulayman al-Ghazzi.

[9] The subjects covered were, in the main, the doctrine of the Trinity, the Incarnation, and the Sacraments, as well as the practices of facing east in prayer (rather than towards Jerusalem or Mecca), and the veneration of the cross and other images.

In Abū Qurrah's Questions of Priest Musa, in the course of its first two discourses ("On the Existence of God and the True Religion")[2] he used a thought experiment in which he imagined himself having grown up away from civilization (on a mountain) and descending to 'the cities' to inquire after the truth of religion: an attempt to provide a philosophical argument in support of Chalcedonian Christianity from first principles.

Theodore also translated the pseudo-Aristotelian De virtutibus animae into Arabic from Greek for Tahir ibn Husayn at some point, perhaps around 816.