18And it came to pass, as he was alone praying, his disciples were with him: and he asked them, saying, Whom say the people that I am? 19They answering said, John the Baptist; but some say, Elias; and others say, that one of the old prophets is risen again. 20He said unto them, But whom say ye that I am? Peter answering said, The Christ of God. 21And he straitly charged them, and commanded them to tell no man that thing; 22Saying, The Son of man must suffer many things, and be rejected of the elders and chief priests and scribes, and be slain, and be raised the third day.

Read Luke 9