There are three big poles that are the basic thrust of what the Church fathers had to say: 1. Petrine primacy, 2. Apostolic succession, and 3. Eucharist. Sure, they had tons of interesting opinions on other things, but these three things tell us how the Fathers identified the Church. (But see for yourself.) Interestingly, the Catholic Church stakes its claim on these same 3 things. That's how someone like me can choose to seek full communion with the Catholic Church. "It's a match," I said. It doesn't matter whether or not I understand the theology of any one particular thing; first I must establish that the one proposing it has the credibility to do that. If the one proposing it is in fact God, via the Church that Christ established, it matters very little that whatever it is (say, Marian dogmas) might be something I had never heard before. I wasn't going to say anything about this, but the commenters made me do it! Anyway, for intellectual honesty's ...
A Christian blog, because: "For from him and through him and to him are all things. To him be the glory forever! Amen." (Romans 11:36)