The Acts of the Council of Chalcedon - Paperbackby Richard Price (Commentaries by), Richard Price (Translator), Michael Gaddis (Commentaries by) The Council of Chalcedon in 451 was a defining moment in the Christological controversies that tore apart the churches of the Eastern Roman Empire in the fifth and sixth centuries. Theological division, political rivalry and sectarian violence combined to produce what ultimately became separate Chalcedonian and non Chalcedonian churches, a schism that