Nestorius,
Patriarch of Constantinople (5th century), while combating the Arians, came
to accept the view that in Christ the two natures stand for two
personalities which are united in one moral person. This doctrine had
previously been prevalent in the School of Antioch where it was held by
Diodorus of Tarsus and Theodore of Mopsuestia of whom Nestorius was the
disciple. Like his master, Nestorius refused to admit that Mary was the
Mother of God, but claimed she was only the mother of Christ. He was
condemned by the ecumenical councils of Ephesus (431) and Chalcedon (451).
Many of his followers persistently adhered to their beliefs and formed a
powerful religious body, part of which has survived to our own day.