John III of Jerusalem
Prior to his appointment to the see of Jerusalem, John was the Bishop of Sebaste and was a partisan of the non-Chalcedonians. John was appointed patriarch of Jerusalem by emperor Anastasius I after banishing Patr. Elias for supporting Patr. Flavian II of Antioch. After his enthronement in Jerusalem John became Orthodox. 
John III accepted the decrees of the Synod of Constantinople held on July 20, 518 that pronounced anathema on Severus of Antioch. Patr. John then convened a synod at Jerusalem that paralleled the examples of Constantinople. Attending the synod was archimandrite St. Sabbas of the lavras of Palestine, a strong Chalcedonian.
- (Theopanes Confessor, "Chronographia", ed. de Boors, Leipzig, 1883-1885, I, 156)