Luke 9:18-21

18Now it happened that as he was praying alone, the disciples were with him. And he asked them, "Who do the crowds say that I am?"

19And they answered, "John the Baptist. But others say, Elijah, and others, that one of the prophets of old has risen."

20Then he said to them, "But who do you say that I am?" And Peter answered, "The Christ of God."

21And he strictly charged and commanded them to tell this to no one,