"Thus, the Orthodox ecumenists as head of the corner (the cornerstone) take the unity of the church or the one church. But they put their wrong, perverted meaning into the concept of “one,” for by this one Church they mean not only all Orthodox, but also all non-Orthodox Christians, that is, heretics.
This ecumenical point of view is completely at odds with the Orthodox view, which, by one church, always understands only the truly believing Orthodox people. Our Church has never considered the heretics to be part of it, to be part of the Body of Christ. And how is it possible to regard this ecumenical point of view as Orthodox, when the Ecumenical Councils have always handed down the heretics to anathema, that is, excommunication from the Church? Obviously, ecumenists in their teachings about the Church do not recognize the authority of the Ecumenical Councils over themselves. But this is tantamount to denying the authority of the entire Orthodox Church and recognizing, in this case, the only criterion of the truth of one’s own reason in denying the Orthodox faith in the Church.
The same rationalism and the same disbelief in the true Church of Christ, the ecumenists put in their interpretation of the catholicism of the Church. We, together with the holy fathers, call the Church a catholic or conciliar, or universal because “it is not limited to any place, time or nationality, but it contains the true believers of all places, times and nations. But ecumenists under this name of the church understand not only the true believers of Orthodox Christians, but all heretics.
They show the same error in their attitude about the apostolic nature of the Church. Strange as it may seem, the ecumenists refer to this apostolic church and the so-called “Christian churches”, which have no apostolic origin or succession at all. They consider all heretical confessions to belong to the Apostolic Church, despite the fact that Paul, the greatest apostle, distinguishes all heretics from the Orthodox Church and blasts them as anathema, saying: "Now, even if ourselves or an angel from heaven should preach to you any gospel that is not what we preached to you, let such a one be anathema!" (Gal 1:8)
But most of all, Orthodox ecumenists sin against the ninth item of the Creed with respect to the name "Holy" of the Church, when they include heretics into the composition of this Holy Church. The Church is called Holy because it is the distributor of the grace of the Holy Spirit, which is communicated to believers in the sacrament of Confirmation when Baptism is performed on them.
This regenerating, sanctifying, and saving grace is the most precious and highest good for us, for giving it to us was the purpose of the coming in the world of Christ and of His sacred sufferings and death. "I have come to bring fire upon the earth," he said, "and how I wish it were blazing already!" (Luk. 12:49)
According to the explanation of these words of Christ by St. Anthony the Great and St. Macarius the Egyptian, the fire here, of course, means the reviving grace of the Holy Spirit, which is poured on us in the sacrament of Confirmation when the sacrament of Baptism is performed on us, which is why it is called Epiphany-grace. As parallel to these divine words, one should also point out the following words of Christ: “it is to your advantage that I go away" (of course to the cross and death) "it is to your advantage that I go away, for if I do not go away, the Counselor will not come to you. But if I go, I will send him to you." (John 16:7). That is why St. Simeon the New Theologian says: “This was the goal and the end of the whole economy of Christ, so that believers would receive the Holy Spirit … and so that He would be like the soul of our soul … and that by the action of This Spirit we would be sanctified, renewed and they re-built in our mind, conscience, and all senses."