High Quality Content by WIKIPEDIA articles! Chalcedonian describes churches and theologians which accept the definition given at the Council of Chalcedon (451 AD) of how the divine and human relate in the person of Jesus Christ. While most modern Christian churches are Chalcedonian, in the 5th–8th centuries AD the ascendancy of Chalcedonian Christology was not always certain. The dogmatical disputes raised during this Synod led to the Chalcedonian schism and as a matter of course to the formation of the non-Chalcedonian body of churches known as Oriental Orthodoxy. The Chalcedonian churches were the ones that remained united with Rome, Constantinople and the three Greek Orthodox patriarchates of the East (Alexandria, Antioch and Jerusalem), that under Justinian II at the council in Trullo were organised under a form of rule known as the Pentarchy.