(23) They were exceeding sorry.--St. Mark (Mark 9:32) and St. Luke (Luke 9:45) add that "they understood not the saying; it was hid from them, that they should not perceive it;" and that "they were afraid to ask Him." Their sorrow was vague and dim, and they shrank from that which might make it more definite.

Verse 23. - Shall be raised again (ἐγερθήσεται); be wakened. This was always a subject of perplexity; and indeed, according to the other synoptists, "they understood not the saying; it was hid from them, and they perceived it not, and were afraid to ask him." Were exceeding sorry. They no longer rebuke him, as Peter had done (Matthew 16:22), or try to divert him from his purpose; they begin to realize the position, and to anticipate with poignant sorrow the overthrow of their hopes.

17:22,23 Christ perfectly knew all things that should befall him, yet undertook the work of our redemption, which strongly shows his love. What outward debasement and Divine glory was the life of the Redeemer! And all his humiliation ended in his exaltation. Let us learn to endure the cross, to despise riches and worldly honours, and to be content with his will.And they shall kill him,.... Put him to death, with the death of the cross; for the angels in rehearsing these words, affirm, that Christ told his disciples at this time, and in this place, whilst they were in Galilee, that he should be crucified, Luke 24:7.

And the third day he shall be raised again: this he said for their comfort; and it is observable, that when Christ speaks of his rising again, he makes mention of the exact time, the third day, on which he should rise, according to the types and prophecies of the Old Testament:

and they were exceeding sorry: that he should be betrayed into the hands of the Gentiles, fearing that another nation would come, and take away, and possess the worldly kingdom and grandeur they were dreaming of; and that he should die at all; and much more that he should die such a cruel and ignominious death, as that of the cross. They seem to have overlooked, and to have taken no notice of his rising again from the dead; which might have administered comfort to them, and have relieved them under their melancholy apprehensions of things; but this they understood not, nor indeed truly any part of what he had said; so Mark and Luke intimate: but then it may be said, how came they to be so very sorrowful, if they did not know what was said? To which may be replied, that this might be the reason of their sorrow, because they did not understand what he said, and they were afraid to ask; they could not tell how to reconcile the betraying of him into the hands of men, and his sufferings and death, with their notions, that the Messiah should abide for ever, and should set up a temporal kingdom, in great splendour and magnificence; and what he meant by rising again from the dead, they could not devise; they could not tell whether all this was to be understood in a literal, or mystical sense.