8:32 {9} And he spake that saying openly. And Peter took him, and began to rebuke him.
(9) None are more mad than they that are wise without the word of God.
8:31-38 He began to teach them, etc. For the first announcement of the suffering of our Lord, the rebuke of Peter, and the lesson concerning the cross, and saving the soul, see notes on Mt 16:21-28. Compare Lu 9:22-27.
8:32 He spake that saying openly - Or in express terms. Till now he had only intimated it to them. And Peter taking hold of him - Perhaps by the arms or clothes.
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.