Of course, one issue in any discussion of Catholics and Orthodox is that both sides use “Catholic” and “Orthodox” in describing themselves.
The term “katholikos” was and is used throughout the Christian East and originally had nothing to do with being under the Pope of Rome. It referred to the Eucharistic model of the Church where the “whole” is present in the “part.”
In the first millennium of the Church, Rome was one of several patriarchates and exercised no immediate jurisdiction over anyone other than its own territory. The only way Rome could get involved in another Church’s “business” is if that Church broke a canon established by an Ecumenical Council or else contradicted the Faith held in common.
And both sides today regard one another as not being the full Catholic Church. On the Orthodox side, this is because Rome deviated from the Faith regarding the Trinity and a number of other issues.
As an Eastern Catholic, it is always a humbling experience for me to know that Orthodox Christians regard me as having fallen away from the Orthodox Faith of the Catholic Church and some see Eastern Catholics as being worse than ever since we are “Roman Catholics” who continue to use Eastern forms for worship.
Even though I have complained about Rome’s treatment of EC Churches and the Ukrainian Catholic Church in particular, the fact is that Rome today does understand that the historic “union model” it once promoted whereby parts of Orthodox Churches were brought under Rome etc. was simply wrong and it has repented of its mistake.
Perhaps the way for Catholics and Orthodox to renew their debate on unity is if the Eastern Catholic Churches became one with their Mother Orthodox Churches, thereby removing the “unia” obstacle. It is really useless for the UGCC to continue in its efforts to be taken seriously by both Rome and Orthodoxy. We need to redress history first.
Also, here is an icon of the Mother of God of Berdichiv, venerated by Catholics and Orthodox alike in Ukraine. Our Lady holds a Scapular in her right hand . . .
kda.org.ua/images/stories/Ch._Ikony/berdychiv.jpg
Alex