Vows had been imposed on monks by the council of Chalcedon (451).
When the popular Nestorianism of the Syrians was condemned at Ephesus (431) it began to gravitate eastwards, Nisibis becoming its eventual headquarters; but Edessa and the western Syrians refused to bow to the Council of Chalcedon (45r) when it condemned Monophysitism.
All these circumstances point to the council of Chalcedon (451).
The years which followed the Council of Chalcedon (451) were a stormy period in the Syrian Church: Philoxenus soon attracted notice by his strenuous advocacy of Monophysite doctrine, and on the expulsion of Calandio (the orthodox patriarch of Antioch) in 485 was ordained bishop of Mabb5g 3 by his Monophysite successor Peter the Fuller (Barhebraeus, Chron.
The Council of Chalcedon (451) rejected the Alexandrian extreme in its turn, guided by Leo of Rome's celebrated letter, and thus put the emphasis on the duality rather than the unity in Christ's person.
To the bishops of Rome, Constantinople, Antioch and Alexandria was added at the council of Chalcedon (session 7) the bishop of Jerusalem, the mother church of Christendom, and the bishops thus recognized as possessing supreme jurisdiction were finally known as patriarchs.
Flavian II., who had accepted the decrees of the Council of Chalcedon and was patriarch of Antioch from 49 8 to 512.
The first stage of the controversy covers the seventy-five years between the council of Chalcedon and the accession of Justinian in 527.
In the next century its use would seem to have been more common as the title of bishops of important sees; for several archbishops are stated to have been present at the council of Chalcedon in 451.
At the council of Chalcedon in 451 it was declared that in the person of Christ are united two complete natures, divine and human,which retain after the union all their properties unchanged.