The people thought that Jesus was a prophet. This was not wrong, but it does not suffice; it is inadequate. In fact, it was a matter of delving deep, of recognizing the uniqueness of the person of Jesus of Nazareth and his newness.
This is how it still is today: many people draw near to Jesus, as it were, from the outside. Great scholars recognize his spiritual and moral stature and his influence on human history, comparing him to Buddha, Confucius, Socrates and other wise and important historical figures.
Yet they do not manage to recognize him in his uniqueness. What Jesus said to Philip at the Last Supper springs to mind: "Have I been with you so long, and yet you do not know me, Philip?" (Jn 14: 9).
Jesus is often also considered as one of the great founders of a religion from which everyone may take something in order to form his or her own conviction. Today too, "people" have different opinions about Jesus, just as they did then. And as he did then, Jesus also repeats his question to us, his disciples today: "And who do you say that I am?".
Let us make Peter's answer our own. According to the Gospel of Mark he said: "You are the Christ" (8: 29); in Luke, the affirmation is: "The Christ of God" (Lk 9: 20); in Matthew resounds, "You are the Christ, the Son of the living God" (16: 16); finally, in John: "You are the Holy One of God". These are all correct answers which are also right for us.
[Pope Benedict, homily 29 June 2007]