A genuinely persuasive argument does not merely tell you that you are wrong about everything. It doesn't just beat on you from the outside. It comes inside your belief system, as it were, and affirms something you believe strongly. And then it says - well if you believe this (A) then why in the world can't you see that B is true?
Timothy KellerThose who believe they have pleased God by the quality of their devotion and moral goodness naturally feel that they and their group deserve deference and power over others. The God of Jesus and the prophets, however, saves completely by grace. He cannot be manipulated by religious and moral performance--he can only be reached through repentance, through the giving up of power. If we are saved by sheer grace we can only become grateful, willing servants of God and of everyone around us.
Timothy Keller