" The Call to Discipleship And as he passed by he saw Levi, the son of Alpæus, sitting at the place of toll, and he saith unto him, Follow me. And he arose and followed him. (Mark 2.14) THE CALL goes forth, and is at once followed by the response of obedience. The response of the disciples is an act of obedience, not a confession of faith in Jesus. How could the call immediately evoke obedience? "

― Dietrich Bonhoeffer , The Cost of Discipleship