2 Corinthians 4:6

For God, who said, "Let light shine out of darkness," has shone in our hearts to give the light of the knowledge of the glory of God in the face of Jesus Christ.

This is one of my favorite scriptures for helping me see what conversion truly means. God creates light in our dark hearts and that light is knowledge of glory. Before what seemed to us untrue or uninteresting has now become true and compelling. The light that God shines into our heart creates the desire.

John 6:44 No one can come to me unless the Father who sent me draws him.