Jesus asks his disciples who people say he is and who they say he is. When Peter responds that Jesus is the Messiah, Jesus affirms this but tells them to tell no one. C.S. Lewis argues that Jesus could not have merely been a great moral teacher, but must have been who he claimed to be - the Son of God. Faith is a gift from God that allows us to believe in him, so we should use our reason to understand our faith more deeply.