(31-33) And he began to teach them.--See Notes on Matthew 16:21-23. The points peculiar to St. Mark are, (1) that our Lord "spake that saying openly"--the absence of any reticence in this announcement of apparent failure was what startled the disciples; and (2) the graphic touch that as He rebuked Peter, He turned and looked, not on that Apostle only, but on the whole company of the disciples.

Verse 31. - And he began to teach them, that the Son of man must suffer many things, etc. In St. Matthew's narrative he says (Matthew 16:21), "From that time began Jesus to show unto his disciples," etc. - from the time, that is, of this great confession; from the time when he had openly acknowledged to his disciples the truth of his essential Divinity; from that time he began to instruct them as to his passion and his death. There are two great principles of faith, namely,

(1) the Divinity and the humanity of Christ, and

(2) his cross and passion, whereby he has redeemed the world.

And it was necessary that the disciples should be thus instructed in his amazing dignity as the Son of God, lest, when they saw him put to death, they might doubt as to his Godhead. And after three days rise again. St. Matthew and St. Luke say, "on the third day" - the day of his death counting for one, and the day of his resurrection for another, with one clear day intervening.

8:27-33 These things are written, that we may believe that Jesus is the Christ, the Son of God. These miracles of our Lord assure us that he was not conquered, but a Conqueror. Now the disciples are convinced that Jesus is the Christ; they may bear to hear of his sufferings, of which Christ here begins to give them notice. He sees that amiss in what we say and do, of which we ourselves are not aware, and knows what manner of spirit we are of, when we ourselves do not. The wisdom of man is folly, when it pretends to limit the Divine counsels. Peter did not rightly understand the nature of Christ's kingdom.And he began to teach them,.... For as yet he had said nothing to them about his sufferings and death, at least in express terms; but now they being firmly established in the faith of him, as the Messiah, he thought it proper to inform them,

that the son of man must suffer many things; meaning himself, as that he should be betrayed, apprehended, and bound, should be smitten, spit upon, buffeted, and scourged; and which things must be done, and he suffer them, because it was so determined by God, and foretold in the Scriptures:

and be rejected of the elders, and of the chief priests and Scribes; which composed the grand sanhedrim of the nation, and are the builders that were prophesied of by whom he should be rejected, Psalm 118:22,

and be killed; in a violent manner; his life be taken away by force, without law, or justice:

and after three days rise again: not after three days were ended, and on the fourth day, but after the third day was come; that is, "on the third day", as the Syriac, Arabic, Persic, and Ethiopic versions read; and even the Pharisees themselves thus understood Christ, Matthew 27:63, so the phrase, "after eight days", is used for the eighth day, being come, or that same day a week later; see Luke 9:28 compared with Matthew 17:1.