Matthew 16:13-20 (Douay-Rheims 1899 American Edition.)
13And Jesus came into the quarters of Cesarea Philippi: and he asked his disciples, saying: Whom do men say that the Son of man is?
14But they said: Some John the Baptist, and other some Elias, and others Jeremias, or one of the prophets.
15Jesus saith to them: But whom do you say that I am?
16Simon Peter answered and said: Thou art Christ, the Son of the living God.
17And Jesus answering, said to him: Blessed art thou, Simon Bar-Jona: because flesh and blood hath not revealed it to thee, but my Father who is in heaven.
18And I say to thee: That thou art Peter; and upon this rock I will build my church, and the gates of hell shall not prevail against it.
19And I will give to thee the keys of the kingdom of heaven. And whatsoever thou shalt bind upon earth, it shall be bound also in heaven: and whatsoever thou shalt loose upon earth, it shall be loosed also in heaven.
20Then he commanded his disciples, that they should tell no one that he was Jesus the Christ.