“The internal call is God’s sovereign, creative, unstoppable voice. It creates what it commands. God speaks not just to the ear and the mind, but he speaks to the heart. His internal heart-call opens the eyes of the blind heart, and opens the ears of the deaf heart, and causes Christ to appear as the supremely valuable person that he really is. So the heart freely and eagerly embraces Christ as the Treasure that he is. That’s what God does when he calls us through the gospel (see 1 Pet. 2:9; 5:10)” (John Piper, Finally Alive, 84).