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 WillardIt's important to distinguish the soul from the spirit, or will, because the will or the heart or the spirit is the executive center of the self.
Dallas WillardWe don't believe something by merely saying we believe it, or even when we believe that we believe it. We believe something when we act as if it were true.
Dallas WillardWhat is truly profound is thought to be stupid and trivial, or worse, boring, while what is actually stupid and trivial is thought to be profound. That is what it means to fly upside down.
Dallas Willard