When was the Orthodox Church founded?
At the time of the Schism of 1054 between Rome and Constantinople, the membership of the Eastern Orthodox Church was spread throughout the Middle East, the Balkans, and Russia, with its centre in Constantinople, which was also called "New Rome."

When did the Orthodox Church split from the Catholic Church?
The East-West Schism, also called the Great Schism and the Schism of 1054, was the break of communion between what are now the Eastern Orthodox and Roman Catholic churches, which has lasted since the 11th century. It is not to be confused with the Western Schism (which is also sometimes called the "Great" Schism).

How many Orthodox churches are there in the world?
The most common estimate of the number of Eastern Orthodox Christians worldwide is 225-300 million, forming a single communion, making it the second largest, single Christian denomination behind the Catholic Church.

What is the Orthodox Church?
In classical Christian usage, the term orthodox refers to the set of doctrines which were believed by the early Christians. A series of ecumenical councils, also known as the First seven Ecumenical Councils, were held over a period of several centuries to try to formalize these doctrines.

What does the Orthodox Church believe in?
Orthodox Christians believe in a single God who is both three and one (triune); the Father, Son, and Holy Spirit, "one in essence and undivided". The Holy Trinity is three "unconfused" and distinct divine persons (hypostases), who share one divine essence (ousia); uncreated, immaterial and eternal.

What was the cause of the Great Schism of 1054 between the Eastern and Western church?
Schism of 1054. Schism of 1054, also called East-West Schism, event that precipitated the final separation between the Eastern Christian churches (led by the patriarch of Constantinople, Michael Cerularius) and the Western Church (led by Pope Leo IX).

Are Greek Orthodox churches Catholic?
Orthodox Churches, unlike the Catholic Church, have no Bishopric head, such as a Pope, and hold the belief that Christ is the head of the Church. However, they are each governed by a committee of Bishops, called the Holy Synod, with one central Bishop holding the honorary title of "first among equals."

Are Orthodox Christians?
Eastern Christians believe that they confess the true doctrine of God in the right (orthodox) way. The Bible of the Orthodox Church is the same as that of most Western Churches, except that its Old Testament is based not on the Hebrew, but on the ancient Jewish translation into Greek called the Septuagint.

Who is head of the Orthodox Church?
The Patriarch of Constantinople Bartholomew I is the spiritual leader of well over 250-300 million Orthodox Christians. Though the Ecumenical Patriarch is not considered to be the head of the Eastern Orthodox Church. His official rank is primus inter pares (first among equals).

Who are Orthodox?
In classical Christian usage, the term orthodox refers to the set of doctrines which were believed by the early Christians. A series of ecumenical councils, also known as the First seven Ecumenical Councils, were held over a period of several centuries to try to formalize these doctrines.

How many people are Eastern Orthodox?
Based on the numbers of adherents, the Eastern Orthodox Church (also known as Eastern Orthodoxy) is the second largest Christian communion in the world after the Roman Catholic Church. The most common estimates of the number of Eastern Orthodox Christians worldwide is approximately 225-300 million.

What is the the Great Schism?
Great Schism may refer to: The East-West Schism, between the Eastern Church and the Western Church in 1054. The Western Schism, a split within the Roman Catholic Church that lasted from 1378 to 1417.