Cross reference
Matthew 16:15
15 He saith unto them, But whom say ye that I am?
Luke 9:20
20 He said unto them, But whom say ye that I am? Peter answering said, The Christ of God.
Matthew 13:11
11 He answered and said unto them, Because it is given unto you to know the mysteries of the kingdom of heaven, but to them it is not given.
Mark 8:29
29 And he saith unto them, But whom say ye that I am? And Peter answereth and saith unto him, Thou art the Christ.