The real issue relating to exclusiveness is whether or not the Christian actually has a relationship with God, a presence of God, which non-Christians do not have. Apart from Christian spiritual formation as described here, I believe there is little value in claiming exclusiveness for the Christian way.
Dallas WillardToday it is the skeptics who are the social conformists, though because of powerful intellectual propaganda they continue to enjoy thinking of themselves as wildly individualistic and unbearably bright.
Dallas WillardGod has yet to bless anyone except where they actually are, and if we faithlessly discard situation after situation, moment after moment, as not being "right," we will simply have no place to receive his kingdom into our life.
Dallas WillardAs Augustine say clearly, God being God offends human pride. If God is running the universe and has first claim on our lives, guess who isn't running the universe and does not get to have things as they please.
Dallas Willard