The Chair of St. Peter

Now when Jesus came into the district of Caesarea Philippi, he asked his disciples, "Who do men say that the Son of man is?" And they said, "Some say John the Baptist, others say Elijah, and others Jeremiah or one of the prophets." He said to them, "But who do you say that I am?" Simon Peter replied, "You are the Christ, the Son of the living God." (Matthew 16:13-19)