For as yet they knew not the scripture, that he must rise again from the dead. They had often heard from the mouth of Christ what they now saw with their eyes, but this flowed from their hearts. Being now warned by the sight of a strange spectacle, they begin to think of Christ as having something Divine, though they are still far from having a clear and accurate knowledge of him. John, therefore, accuses himself, when he acknowledges that the first time that he believed was, when he beheld the proofs of Christ's resurrection. Besides, he represents more strongly his own guilt and that of his brethren, by adding, that they not only had forgotten the words of Christ, but that they did not believe the Scriptures; for to this ignorance he ascribes the deficiency of their faith. Hence, too, we may draw a useful instruction, that we ought, to ascribe it to our carelessness, when we are ignorant of what we ought to know about Christ, because we have not profited as we ought to have done by the Scriptures, which clearly reveal the excellence of Christ. Not to go farther for an instance of this, it may be thought that the resurrection of Christ is taught in them obscurely, and only under figures; but the attentive reader will find abundantly clear testimonies. Paul proves (Acts 13:34) that Christ must have risen from the dead, because God declares by the prophet Isaiah, (Isaiah 55:3) that, under his reign, the mercy promised to David would be sure. An unskilful person might imagine that what Paul quotes is not at all to the purpose; but they who believe the principles of fkith, and are well acquainted with the Scriptures, have no difficulty in perceiving the force of this argument; for, in order theft Christ may secure to us for ever the grace of God, Christ himself; must live for ever. There are many passages of the same kind, which it is not, now necessary to collect. Let us therefore rest satisfied with the three following. It is written, Thou wilt not permit thy Holy One to see corruption, (Psalm 16:10.) Peter and Paul explain this prediction as referring to Christ, (Acts 2:27, and Acts 13:35,) and justly; for there is not one of all the sons of Adam who is not of himself liable to corruption. Consequently, the immortality of Christ is there declared. It is likewise beyond all doubt that the following passage refers to Christ, The Lord said to my Lord, Sit thou at my right hand, until I make thy enemies thy footstool, (Psalm 110:1.) Now, death will not be destroyed till the last day. The kingdom is titan given to Christ till the end of the world, and this kingdom cannot exist without his life. But Isaiah speaks more clearly than all the rest when, after having foretold the death of Christ, he immediately adds, that it impossible to declare his age, (Isaiah 53:8.) In short we ought to believe that the doctrine of Scripture is so full and complete in every respect that whatever is defective in our faith ought justly to be attributed to ignorance of the Scriptures.

The scripture - See Luke 24:26, Luke 24:46. The sense or meaning of the various predictions that foretold his death, as, for example, Psalm 2:7, compare Acts 13:33; Psalm 16:9-10, compare Acts 2:25-32; Psalm 110:1, compare Acts 2:34-35.
For an account of the resurrection of Christ, see the notes at Matt. 28.

They knew not the scripture - Viz. Psalm 16:9, Psalm 16:10 : Thou wilt not leave my soul in hell - כי לא תעזב נפשי לשאול ki lo taazob naphshi l'sheol - For thou wilt not abandon my life to the grave, nor suffer thy Holy One to see corruption. It was certainly a reproach to the disciples that they had not understood this prophecy, when our Lord had given them often the most direct information concerning it. Christ had referred to the history of Jonah, Matthew 12:40, which was at once the type and the proof of his own resurrection. However, this ingenuous confession of John, in a matter so dishonorable to himself, is a full proof of his sincerity, and of the truth of his narration.

For as yet they knew not the Scripture,.... Meaning not some particular passage of Scripture, but the writings of the Old Testament in general, and the various places in it, which spoke of the resurrection of Christ, either in a way of type, or prophecy; such as Genesis 22:3 and though our Lord had often referred to some of them, at least as in Matthew 12:40 yet such was the dulness of the disciples, or such their prejudices in favour of the Messiah being to continue, and set up a temporal kingdom, that even John, who leaned on his breast, and Peter, who was so inquisitive and desirous of knowing our Lord's meaning in everything, did not understand the sense of his words, nor of those places of Scripture he had reference to:
that he must rise again from the dead: so it was determined, thus it was predicted, and the justification and salvation of God's elect required it; and yet they knew not the thing, nor the necessity and importance of it.

For as yet they knew--that is, understood.
not the scripture that he must rise again from the dead--In other words, they believed in His resurrection at first, not because they were prepared by Scripture to expect it; but facts carried resistless conviction of it in the first instance to their minds, and furnished a key to the Scripture predictions of it.

For as yet - They had no thought of his rising again.