The Orthodox Chalcedonian Cyrillian Christology expressed in the Greek language:

The two major heretical Christologies of the 4th century AD expressed in the Greek language. The Nestorian Christology was condemned at the Council of Ephesus (AD 431), and the Monophysite Christology was condemned at the Council of Chalcedon (AD 451). The latter can be interpreted in an Orthodox fashion if it remains closely aligned with the miaphysis teaching of St. Cyril of Alexandria:

Groups that use the Syriac language (n.b., the Antiochian Orthodox and Maronite Catholic positions are fully Orthodoxy):

The Assyrian and Chaldean Christology expressed in the Syriac language was condemned at the Council of Ephesus (AD 431):

The Jacobite Christology is a form of the Miaphysite (Monophysite) Christology already mentioned above:

The Christological doctrine of the Nestorians, Assyrians, and Chaldeans may - in varying degrees - reflect the ideas of Theodore of Mopsuestia who believed that every physis (kyana) must have a connatural hypostasis (qnoma), and every hypostasis (qnoma) must have a connatural prosopon (parsopa); and so, according to Theodore, Christ's incarnation involved a union of a human prosopon (parsopa) and a divine prosopon (parsopa) in honor and worship. This combined prosopon (parsopa) concept would be akin to a moral union of the eternal Logos and the man Jesus, where the Logos and Jesus share honor and worship, while remaining ontologically distinct.