One of the snares into which we preachers fall, rather often I think, is to assume that the people to whom we preach are already Christians. That’s true, generally. But I would be kidding myself if I preached from Sunday to Sunday to this congregation assuming that everyone here had already made an explicit commitment to Christ. But there’s another issue at stake, as well, a very common experience in congregations every where. There are people in worship every Sunday who are Christian, yet they’re not very certain of that; they don’t have the assurance. There is that nagging, gnawing, deep down that keeps eating away at their souls. This especially becomes an issue when they are confronted with a dramatic, dynamic witness of another Christian. So many of what I call “main-line Christians” …