No they are not although both are apostolic churches, the Eastern Orthodox hold that Church Doctrine cannot change without the decision of an Ecumenical Council, as with the seven recognized Ecumenical Councils of the first millennium of the Church. Catholics, however, believe that the Pope can define new Church doctrine without consultation with the rest of the Church and, when he defines new teaching, Catholics believe the Pope is infallible.
Yes, except for two dogmas. The Orthodox do not believe in the dogma of Papal infallibility and they do not believe in the dogma of the Immaculate Conception of the Virgin Mary. Most other dogmas are the same.
No, Greek Orthodox is part of the Eastern Orthodox Church, which traces its history back to Christ and the Apostles for more than 2,000 years. For the first 1,000 years of history, there was only one church. Then, after the Great Schism in 1054 AD when the Latins broke away from the church, they became known as Roman Catholics, and the Orthodox continued to exist and have remained undivided to this day.
In many ways, yes, the Orthodox maintain a valid priesthood, and valid sacraments. Unfortunately, since they have separated from Christ's Vicar on earth they have remained frozen in time, and have not advanced beyond a 12th century understanding of Christianity. Still they remain a true Church, howbeit crippled without the Holy Father; unlike the protestants who completely threw over their priesthood and sacraments, and thus lost any vestige of being a church.
Yes, they are very similar. They are even more similar to Catholicism than Protestantism is.
No, they are nearly identical in their beliefs but are two separate religions.
Yes, both are of the Eastern Orthodox faith. The only major difference is the language of the liturgy (Bulgarian or Greek).
No, it is considered a sub-group. "Eastern Orthodox" is a broad term used to edscribe the group of chruches that split with the Roman Catholics in the 11th century
It is in August, the same as the Catholic Church.
No, it does not.
Whether in Romania or elsewhere, the Orthodox Churches are national Churches which broke away from Communion with the Catholic Church in the 11th century. Their clergy and sacraments remain the same, and their liturgy is identical to the Catholic Uniate rites of the same rite, but they are still in schism, and thus not "the same".
Both the Eastern Orthodox and the Western Catholic branches of Christianity claim to have the same 'pillars' of religious foundations.
for the most part, there is a huge Greek Orthodox Christian population. pretty much anyone who isn't greek orthodox immigrated.
No, it is not the same process.
The Orthodox Christian Church is over 2,000 years old, however, the name for this Church in Greece and some other parts of the world started to become known as "Greek Orthodox" from about 1821. The Greek Orthodox are part of the Orthodox Christian Church (sometimes called the Eastern Orthodox Church) which is the same Church that Jesus founded in 33 AD.
The Greek Orthodox and Coptic Orthodox Churches are now theologically the same but are separate because of the misunderstanding that happened in 451AD however both now see each others view on the nature of christ as truly ORTHODOX They both have apostolic succesion the Greek Orthodox founded by St.Andrew and the Coptic Orthodox founded by St.Mark.Both have presevered their native traditions and beliefs something that is sacred to all eastern churches
The Catholic Church has had several Eastern Rites for most of her history. In the eleventh century, most of the Eastern Rites split in two, which half of each Rite remained with the church and half forming the new Orthodox Church. Thus the Greek Orthodox Church has the same liturgy as the Greek Uniate Church, but they are no longer in communion with Rome. Nearly all of the Eastern Rites did this, although I do not think that there is a "Russian" Uniate Church. Anyway, all of the Orthodox Churches are not in union with Rome.
as far as i known everyone celebrates Christmas the same way no madder who they are