I was asked some time ago to be a co-contributor to the weblog "Retro-Church". Unfortunately, a combination of factors, including my own busy-ness, have meant that I have contributed nothing either here or there for some time. In order to avoid duplication of comment-threads, I have posted an essay on the above subject at the other weblog, and give the link here.
In future, I think I will follow this procedure for my other essays, but post sermon-notes here only.