The will work of Theodore of Mopseustia, and Diodorus of Tarsus, were then the conventional theological authorities of the Syrian Church, and Hibha built a Syriac version of Theodore's get the job done for use at Edessa and then, as the terminology and logic of that operate offered problems to oriental students, he also designed a Syriac translation of the Isagoge of Porphyry, which was the typical introduction to logic, and of Aristotle's.