I admire your loyalty to your denomination. And yes I will continue to call it that. Although strictly speaking there are several orthodox denominations.
There is only one true CHURCH. Yet it has many members. And if the hand says to the foot I have no need of you, as you seem to be saying to me and to every other denomination, then you are dishonoring Christ and his Church.
It is Christ who calls his people to himself. It is Christ who gives his people love for each other. It is the Spirit who unites us with Christ. It is the Spirit who enables his people to call him Lord.
It is your kind of thinking (with respect) that Jesus calls his disciples out on. They saw other believers, but who were not part of their select group, and asked Jesus to judge them. And Jesus' judgment was that "since they are not opposed to me, they are with us". I think you really need to consider his words more closely.
It is completely unloving and unbiblical to say that neither the RC or the Protestant Churches are not part of the true church. This is also to disregard the covenant of God and is clearly in error.
If you understood the bible, and its covenant position, then you would see that it is GOD who brings about life. And it is God who initiates covenants and institutions. The community we live in has numerous institutions - State, Church, and Family. And also individuals.
The Apostle Paul could write that the Roman Empire was a State ordained and put into place by God. And this was despite its anti-God sentiments and its anti-Christian sentiments. Using your current logic in relation to the church, this would not and could not be the case. You would say that Paul was wrong.
The church was formed at Pentecost. The Spirit of God fell on the people of God as the preaching of the gospel by the Apostle Peter spoke and indeed as the other disciples spoke. The disciples and the many thousand who became Christians on that date after Pentecost went home to their many places in the world and the gospel spread. The NT reveals that the church spread and spread all around the world. The letter to the Colossians indicates that the gospel was preached to every creature under the sun.
Since you do not know much of church history save and except in the very narrow books of OC, you will not have heard that the gospel penetrated to England before the end of the first century. The Roman church finds this hard to believe and yet the council records right back to the earliest fathers show there were bishops and elders who came from the British Islands at the earliest councils.
Protestants as we know them know - did not start with the Luthers and the Knox's and the Calvins. They started right back in the very earliest days of the church. Even the Apostle Paul was one who wanted to keep the church pure and often railed against the traditions in the churches that were springing up in the NT. Sin corrupts even the most holy of Christians and their churches. And it is ALWAYS in a need of REFORMING. In the West we call this part of the sanctification process.
The OC has unfortunately lost its way. It really has. It does not believe it needs to change. It thinks it has already become perfected and has no need of reforming. It is much like the Jewish religious system at the time of Christ, it knows everything. It knows the truth and it is the only true church and everyone else is wrong.
While I have no desire to call the OC heretical, it is fair to say that it is in error on many counts. And while I might also indicate that I prefer to the OC to the RC, they are very similar in many respects as well. Both reject the basic tenants of Christianity in favor of tradition - and not the tradition of the bible, but their own traditions. And both reject the authority of God in the word of God, making it subject to the teachings and authority of the church.
The OC did not write the bible. The OT is Hebrew in origin. And compiled by the Jews. Not by the Church. The NT was written by Christians in the early days of the church and sent to various churches where the people of God in those local churches or denominations recognized the Word of God and then sent it on. The NT at best may have been compiled together at some stage by the Church, recognised in the councils. Yet, the words, themselves, and the letters, were not put together by the church. The Spirit of God revealed to his people - all over the world what his words were. The church has no right to interpret them anyway it likes.
It was one of the sins of the church to hide the word of God from the people of God. And to put it in language they could not read. Each person is not allowed to interpret the scriptures anyway they like. Yet there is a way of interpretation that both the RC, the OC, and other churches together can honor God and each other.
There is unity within the church. There are factions within the church because there are various parts of the body who are different. It is unfortunate that the OC has taken a axe and cut of all other parts of the body - leaving itself as only a finger. The church is not just a finger.