The common element among them is their non-acceptance of the Council of Chalcedon of AD 451. The Council of Chalcedon caused a big schism within the church which lasted until the present. In addition, after the Arab invasion in the seventh century, the churches lost communication with each other. They never accepted this idea considering it a heresy. The purpose of this paper is to reconsider the issue.
Several publications reflect such an attitude.
In May 1973 H.H. Pope-Shenouda III of Alexandria visited H.H. Pope Paul VI of Rome. In Him His divinity is united with His humanity in a real, perfect union without mingling, without commixtion, without confusion, without alteration, without division, without separation. After fifteen centuries, the two prelates declare a common faith in the nature of Christ, the issue which caused the schism of the church in the Council of Chalcedon. This will lead us to throw some light on that council. According to some Scholars, there, was no need for it, but politics played a big role.