He did not really illumine or convert great Armenia, for the people were in the main already converted by Syrian missionaries to the Adoptionist or Ebionite type of faith which was dominant in the far East, and was afterwards known as Nestorianism.
Thus the council rejected both Nestorianism and Eutychianism, and stood upon the doctrine that Christ had two natures, each perfect in itself and each distinct from the other, yet perfectly united in one person, who was at once both God and man.
But he favoured the introduction of Nestorianism, in opposition to the orthodox creed of Byzantium.
Western Syria, on the contrary, had partaken with Alexandria in the reaction from Nestorianism which finally crystallized in the Monophysite doctrine, that spread so widely through Egypt and Western Asia towards the end of the 5th century.
Rabbula, the powerful and energetic bishop of Edessa who withstood the beginnings of Nestorianism, and who gave currency to the Peshitta text of the four Gospels, abolishing the use of the Diatessaron, is dealt with in a separate article.
