OK, I am officially becoming a Tim Keller fan. I took a few minutes tonight to peruse through the Tim Keller videos on youtube that were posted by the team who ran the postmodernism conference I attended in Minneapolis last year. This is a good clip on what it means to be a missional church. Tim articulates very well how it is we must relate to non-believers if we wish to be missional. Establishing context is key.
Along a related vein, here is a video from Mark Driscoll on how Christians should relate to sinners. Definitely thought provoking.