Matthew 16 no Pope no office.
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?
The setting of our text has the Lord at the coast of Philippi and He asks the disciples, "Who do men say that I am?".
The disciples had just completed their limited commission and had gathered information on who and what the people thought about Jesus.
And they said, Some say that thou art John the Baptist: some, Elias; and others, Jeremias, or one of the prophets.
The disciples answered by giving the positive answers; not the negative, for undoubtedly some had given negative responses.
He saith unto them, But whom say ye that I am?
Jesus now turns the question to them making it personal, requiring an expression of their faith. Jesus undoubtedly knew their faith and it's depth; but for their good, asks for a confession.
And Simon Peter answered and said, Thou art the Christ, the Son of the living God.
Peter here holds true to character, speaking first and for the rest of the group.