John,

I went back and re-read your question, and I realize now my post was sort of a "non-sequitur" to yours. When I speak of "lone ranger Christians" I am speaking of those who do not participate in, or attend, any church at all. I know a couple of guys--indeed, one where I work--who hold themselves out to be Christians but do not attend church at all. I had people like that in mind when I mentioned the preaching and teaching aspect.

"Regular attenders" are often welcome to participate in the sacraments at most churches, although I do think elders or clergy often would expect them to join the church after a while. That is (I would say) because of the discipling/accountability aspect.

Sorry about the nonsequitur!

Theo