Matthew 16:19 (KJV)

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

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

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

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.

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.

Then charged he his disciples that they should tell no man that he was Jesus the Christ.

From that time forth began Jesus to shew unto his disciples, how that he must go unto Jerusalem, and suffer many things of the elders and chief priests and scribes, and be killed, and be raised again the third day.

Then Peter took him, and began to rebuke him, saying, Be it far from thee, Lord: this shall not be unto thee.

But he turned, and said unto Peter, Get thee behind me, Satan: thou art an offence unto me: for thou savourest not the things that be of God, but those that be of men.

Then said Jesus unto his disciples, If any man will come after me, let him deny himself, and take up his cross, and follow me.