I was in a small rural church one time that had a major dispute about where the pies should be placed in the kitchen prior to serving them for the annual turkey supper. One woman actually left the church community because several new comers to the church had convinced the rest of the women working in the kitchen that it would be more efficient to put the pies on the counter beside the sink instead of the counter next to the refrigerator. "It's not the right way to do it", she said. "We've never done it that way before, and I am not going to be part of doing it that way now. I won't have any part of that kind of thing. Those new people are going to ruin this church. They don't know anything. They aren't even from around here."
Sound familiar to anyone?
The apostle John came up to Jesus one day. "Jesus", he said, "I was walking down the road with the rest of the disciples, and we saw someone casting out demons in your name. We tried to stop him because we don't know who he is; we tried to stop him because he's not one of us.