The will work of Theodore of Mopseustia, and Diodorus of Tarsus, were being then the conventional theological authorities of the Syrian Church, and Hibha made a Syriac edition of Theodore's perform for use at Edessa and then, as the terminology and logic of that function presented issues to oriental students, he also produced a Syriac translation of the Isagoge of Porphyry, which was the standard introduction to logic, and of Aristotle's.