Here is a man who better understands what it means to be "the church" than Bob Thiel and the rest of the self-appointed harbingers of "truth" in the Church of God understand. Bob and his ilk are all about building walls and division in the church.
The church has always built walls to surround itself from others, to keep itself "pure and untainted" by the world. Well, look how well that has worked out for them all so far. They are all just miserable little shells trying to recapture the glory days that are unattainable for all of them.