We are making a mistake when we think the answer to this dilemma is obvious.  The world does not know Jesus the way that we do.  The world does not understand spiritual things.   Yet, we need to take the time to address ourselves to them in a way that they can understand.  Sometimes we offend the nonchristian, not because we have told them the truth, but because we have intentionally offended them as a way of insinuating that they are beneath us or unenlightened.  The Truth has set us free and this is the same Truth that would set them free - if properly presented.  Those who will not see have had their minds darkened, but we Christians were also once in darkness and now have seen the Light.........I believe that it is impossible for us to change hearts.  That is for Christ to do.  I also believe that it is our responsibility to be ambassadors for Christ - to represent Him accurately insomuch as we can with all our hearts.  If God so loved the world, and He did and does, then we should love the unsaved also and desire their salvation even more than desiring to look "spiritual."

On the other hand, we can offend not only our weaker brother by crossing the line in our conduct, but also let down the unsaved who expect us to be different.  Sometimes their criticism of Christians is only an excuse for their own conduct and is their awkward way of admitting that what they do may actually be wrong.  If we are truthful, here again a rememberance of what we were like before we were saved would serve us in being a faithful witness to Christ.