The first great threat to the new orthodox order of things came through the divergences over Christology emerging out of Antioch and Alexandria. These fought their first open battle at the Council of Ephesus over the ideas and work of Nestorius, the Patriarch of Constantinople who was a representative of the "school" of Antioch. Taken from the series: Dr. John Rao, "From Augustine and Chrysostom to the Papal-Frankish Alliance Christianity in the Early Middle Ages (395-752) - 2006 VonHildebrand Institute"