When Jesus went into the region of Caesarea Philippi he asked his disciples, "Who do people say that the Son of Man is?" They replied, "Some say John the Baptist, others Elijah, still others Jeremiah or one of the prophets." He said to them, "But who do you say that I am?" Simon Peter said in reply, "You are the Messiah, the Son of the living God." Jesus said to him in reply, "Blessed are you, Simon son of Jonah. For flesh and blood has not revealed this to you, but my heavenly Father. And so I say to you, you are Peter, and upon this rock I will build my church, and the gates of the netherworld shall not prevail against it. I will give you the keys to the kingdom of heaven. Whatever you bind on earth shall be bound in heaven; and whatever you loose on earth shall be loosed in heaven." Then he strictly ordered his disciples to tell no one that he was the Messiah. (Mt 16: 13-20)
Man in his search for God, does not arrive at God completely. His search is limited. His search also is limited by his own knowledge of the past and the other religious person. This is the reason why people consider Jesus to be Elijah, Jeremiah or one of the prophets. Their search could lead them till there only. Search is always limited and a search will never arrive at the complete truth.
Peter replied Jesus saying that he was the Messiah. This knowledge is the result of the revelation. It is not the fruit of his search rather it is given from above, from the Father. Jesus also affirms Peter and tells him that this knowledge is from God. When one possesses God’s revelation then he becomes the rock on which God’s activities are established.
The kingdom is built on the faith which rooted on revelation. Faith and revelation together form something like a rock which cannot be shaken. Any person who has his faith on the revelation is the person on whom the church is built. A man with faith on revelation cannot be overcome by any force. Nothing can prevail him. Such a person will be like an entry point into the kingdom of heaven. He will be the link between heaven and earth.