Mark 8:27-30

27And Jesus went on with his disciples to the villages of Caesarea Philippi. And on the way he asked his disciples, "Who do people say that I am?"

28And they told him, "John the Baptist; and others say, Elijah; and others, one of the prophets."

29And he asked them, "But who do you say that I am?" Peter answered him, "You are the Christ."

30And he strictly charged them to tell no one about him.