Matthew 16:13-18

13 When Jesus came into the coasts of Caesarea Philippi, he asked his disciples, saying, Whom do men say that I the Son of man am?

14 And they said, Some say that thou art John the Baptist: some, Elias; and others, Jeremias, or one of the prophets.

15 He saith unto them, But whom say ye that I am?

16 And Simon Peter answered and said, Thou art the Christ, the Son of the living God.

17 And Jesus answered and said unto him, Blessed art thou, Simon Barjona: for flesh and blood hath not revealed it unto thee, but my Father which is in heaven.

18 And I say also unto thee, That thou art Peter, and upon this rock I will build my church; and the gates of hell shall not prevail against it. (Linked to the KJV on-line application)