Religion of eastern Christian churches that recognize three of the ecumenical councils, the First Council of Nicaea, the First Council of Constantinople, and the First Council of Ephesus, but they reject the dogmatic definitions of the Council of Chalcedon of 451 CE, particularly the tenet that Jesus is one person in two complete natures, one human and one divine. The Oriental Orthodox maintain that this view is too close to the Nestorian heresy, which held that Christ was two distinct beings, the divine Logos and the human Jesus.
