At a breakout session at Passion07, Pastor John Piper used a phrase that some may find inappropriate. Here, Pastor John explains why and his reflections afterwards. Of notable quotability:
I think if I had it to do over, I would not say it. On the one hand, I don't like fanning the flames of those who think it is hip and cool to swear for Jesus. That, it seems to me, is immature. On the other hand, I want those hip people to listen to all I say and write, and I hope that the Lord may get a hold of them and draw them out of immaturity and into the fullness of holiness. But it backfires if one becomes unholy to make people holy.
I like where he is going here. I realize this is a debatable issue, but there do seem to be some biblical evidences for the use of strong language in certain circumstances. It seems like there could indeed be cultural situations where it could be appropriate. The problem though, as Pastor John states here, is crossing the line into becoming "unholy to make people holy." I don't think the pulpit is an appropriate context to drop some language bombs, but are there times and places where strong "non-churchy" vernacular (i.e. cussing) could be culturally permissable - even useful - in relating to folks outside of the Church?