Analysis of information sources in references of the Wikipedia article "Greek Orthodox Church" in English language version.
The distinctive characteristics of the Greek Orthodox Church are its sense of continuity with the ancient Church of Christ and the Apostles and its changelessness. The Orthodox church traces its existence, through the ordination of Bishops, directly back to the Apostles and through them to Jesus.
The Eastern Orthodox and the Roman Catholic Churches are the oldest with roots going back to the earliest Christian groups.
The Orthodox Church traces its origins to the churches founded by the apostles in the Middle East and the Balkans in the first century.
Catholicism holds that if a Church claims to be Christian, then it must be able to show that its leaders-its bishops and its presbyters (or priests)- are successors of the apostles. That is why the Catholic Church accepts Eastern Orthodox ordinations and sacraments as valid, even though Eastern Orthodoxy is not in full communion with Rome.
This connection is apparent through the historical succession of bishops of churches in a particular geographic locale and by fidelity to the teachings of the apostles (cf. Acts 2:42) and life as it developed in the patristic tradition and was articulated by the seven ecumenical councils.
There are three branches within Christianity: Catholic, Eastern Orthodox, and Protestant. ... The Christian church draws its lineage and roots from the time of Jesus Christ and the apostles in CE 25–30 and the birth of the Church at Pentecost in ...
EASTERN ORTHODOXY, one of the major branches of CHRISTIANITY, characterized by its continuity with the apostolic church, its liturgy, and its territorial churches.