I always thought that the 7 church letters from Jesus in Revelation was addressing that issue that the two of you are talking about. The letters were for the church of that time, yet, a prophecy of the church in the last day. So, Jesus already described HIS church as NOT being totally on one accord. Then He tells each group what?s needed on their part to get them straight, or else...
So, I recognize the denomination differences but I don?t stress over it. I also realize that most people believe that those letters were for THAT time period, alone, and don?t apply today. And I don?t stress or loose sleep over that either.