of East Syria and Mesopotamia, outside the boundaries of the Byzantine
Empire and largely within the Persian Empire.
These churches did
not accept the definition of Mary as theotokos
or "Mother of God." Sometimes called "Assyrians" or "Chaldeans" by western
writers, they called themselves the Church of the East. They have often
unjustly been considered Nestorian. They
affirmed the unity of Christ's persons, but emphasized his full humanity
in the manner of the Antiochene theology.
In the ancient era this church was very large, reaching across Asia to
China. It was destroyed in successive persecutions.