The Roman Catholic Church and Eastern Orthodox Church split about 1000 AD over issues like the pope's authority and power over certain lands, and the fact that the western church had added that the Spirit proceeded 'and from the Son'-- as in proceeded from the Father and from the Son to the Nicene Creed without agreement in a church council. The added part to the creed is called the filioque.If I understand the Eastern Orthodox position right, they think this is important because they take that part of the creed to be about the existence of the Spirit being dependent on the Father. The existence of the Word and the Spirit are seen to be dependent on the Father, and they eminate from the Father. That's my understanding of their understanding, not their own words. They reject the pseudo-Athanasian creed.One thing I like about Greek Orthodoxy from how they heard is how they choose their elders/priests. I hear the congregation puts forward the man they believe best reflects Christ. Before the bishop ordains him, the congregation says in Greek, He is worthy. If anyone says He is not worthy, the bishop(s?) have to investigate. This resembles how the seven, who may have been deacons, were ordained. It also follows the Biblical pattern of elders/priests being ordained from within the congregation like we see in Paul's writings. Their priests/elders can be married, too. But if I am not mistaken they have to stay celibate to remain in the priesthood (and might be required to stay celibat and expected to remain in the priesthood, but I am not sure) if the wife dies. But they have an elder/bishop distinction that I cannot see in scripture, and their bishops have to be celibate, so I do not agree with that.I heard some of the liturgy in English, and much of it is good stuff, IMO, lots of prayers sung or chanted. But they do start chanting to Mary after they get into it for a while. Roman Catholic calls Mary the 'Mother of God.' Orthodox use the Greek 'theotokos'-- the one who bore God. The RCC translated that in a rather shocking way, IMO.I heard Francis Shaeffer's son Franky converted to Greek Orthodoxy and was advocating for them to be more active against abortion. I had read that there were some problems with Eastern Orthodox over who is the bishop of what between the OCA and the Russian Orthodox. I am not sure if there is something considered a schism or if it is unresolved or resolved by now. If you believe in more or less one bishop per city and you have immigrant communities and native groups growing it could be an issue