Matthew Poole and continuators on Luke 9:22

22 Saying, 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.

Matthew and Mark tells us this discourse passed at Cesarea Philipi, (or at least one of the same import) Matthew also gives us an account of it with more circumstances. See the Notes on Matth. 16.14. As he was alone Praying. That is free from the multitude, for the next Words, tell us, the Disciples were with him. The 22 v. is not to be found in the other Evangelists; and if Luke hath reported these Words in the right order of time, they afford us a probable reason of what is v. 21. Why Christ would not yet be published, as the Christ, or the Son of God. Because he was to suffer, and it might much have shaken Peoples Faith, as to that Point, if they had seen the Person, of whom they believed such suffering and to be so despitefully used as he was, he therefore desired to be concealed as to that, untill he should be declared to be the Son of God with Power, by his Resurection from the Dead.

Marginal references: Math. 17.22.