Me and some family members have decided to go to a Church next Sunday, and there are only two options. Catholic church and Russian Orthodox. I've only read about the early church in the Bible and don't know much about modern churches. How are we expected to behave in there and which option is closer to the truth? What do people usually come to do there? Do I just watch people praying from a distance or is there a way to get "in"?
Victor, which country are you in?
Just a quick review on church history: the term "catholic" is used by scholars (not today's Christians) to describe Christians who were sound in their theology at that time. Some may have called them "Nicene" Christians because they did not deny the Trinity or the deity of Christ. Others were not catholic, and these non-catholics would be Arians, amongst others, who denied the Trinity and deity of Christ.
The "catholic" church was composed of multiple bishoprics, such as Rome, Alexandria, Antioch, Constantinople, and Jerusalem. Of these, Rome was Western, and the rest were Eastern.
Monophysites separated from the "catholic" church due to a controversy over Christ's deity and humanity. The Eastern churches separated from the Roman Catholic Church in 1054 over the filioque clause, related to whether the Holy Spirit proceeds from the Father alone, or the Father and the Son.
And, of course, evangelical Christians separated from Rome at the Reformation.
At any rate, Russian Orthodoxy is more associated with Eastern churches. Eastern Orthodoxy reasons in a very different way than Roman Catholicism. I would characterize them as being more mystical and experiential, whereas Roman Catholicism would be more law-based, and based on reason.
Evangelical Christians (which is most of this forum), would tend to hate Roman Catholicism, and be ignorant of Eastern Orthodoxy.
I would recommend trying to find an evangelical church if you can. If you are in Israel, particularly Jerusalem, I would recommend looking at the Youtube channel JerusalemAssembly and asking their advice. They are a group of Messianic Jews in Israel, but they are not like the Judaizers you would find here on this forum. They don't believe that Sabbathkeeping and eating clean meats is required.
If you want me to try to find something for you, perhaps you can let me know your city name, and country, and I can do some searches I'm pretty good at finding those sorts of things.
Regarding Orthodox churches, from what I heard, their building is supposed to be a replica of heaven, and that is why there are icons of saints. Supposedly the saints are associated with the icons, and enter into the worship ceremony with believers through the icons. I don't think there are any seats in an Orthodox church, so all the worshipers stand, except for those who are handicapped...they are seated on the outside with provided seats.
I would suggest that you look for an evangelical church, but at the same time, I think God is pleased that you are seeking him. That is the main thing. Don't fall for the cultic groups during your search for him, though. Find a good evangelical church if you can. The word "evangelical" simply means "the gospel" and it seems like there should be something around you. Unfortunately, though, in some areas, the choices are slim, and the only evangelical churches are Pentecostal/charismatic. I am not a fan of either one.