The artist has ingeniously painted the hand of Christ as a mirror image of the hand of Adam in Michelangelo Buonarotti's creation of Adam scene on the Sistine Chapel ceiling. So now the hand which bestows life and summons to service, the hand of God, is also the hand of the Son of Man (Ben-Adam in Hebrew). It is this hand of the Word made Flesh which directs the light -- the light which reveals our sinfulness and makes it possible for us to repent. As Saint Bede the Venerable wrote concerning this event, "Our Lord summoned Matthew by speaking to him in words. By an invisible, interior impulse flooding his mind with the light of grace, he instructed him to walk in his footsteps."