Matthew 26:31

Also He foretels this to them, that they who now were somewhat dispersed in consequence of the offence, should be after gathered together by Christ rising again, and going before them into Galilee of the Gentiles. Whence the other disciples were offended in Jesus, but Peter was not only offended, but what is much more, was suffered to deny Him thrice.

The credit of this prediction is supported by the authority of old prophecy; It is written, I will smite the shepherd, and the sheep of the flock shall he scattered abroad.

Then "He saith unto them, All ye shall be offended in me." After this He mentions also a prophecy, "For it is written, I will smite the shepherd, and the sheep shall be scattered abroad:" at once persuading them ever to give heed to the things that are written, and at same time making it plain that He was crucified, according to God's purpose; and by everything showing He was no alien from the old covenant, nor from the God preached therein, but that what is done is a dispensation, and that the prophets all proclaimed all things beforehand from the beginning that are comprised in the matter, so that they be quite confident about the better things also. And He teaches us to know what the disciples were before the crucifixion, what after the crucifixion. For indeed they who, when He was crucified, were not able so much as to stand their ground, these after His death were mighty, and stronger than adamant. And this self-same thing is a demonstration of His death, the fright and cowardice, I mean, of His disciples. For if when so many things have been both done and said, still some are shameless, and say that He was not crucified; if none of these things had come to pass, to what pitch of wickedness would they not have proceeded? So for this reason, not by His own sufferings only, but by what took place with respect to the disciples, He confirms the word concerning His death, and by the mysteries also, in every way confounding those that are diseased with the pest of Marcion. For this reason He suffers even the chief apostle to deny Him. But if He was not bound nor crucified, whence sprung the fear to Peter, and to the rest of the apostles.

He foretels what they should suffer, that they might not after it had befallen them despair of salvation; but doing penitence might be set free. And He adds emphatically this night, (1 These. 5:7.) because as they that are drunken are drunken by night, so they that are scandalized are scandalized by night, and in the dark. This is found in Zacharias in words different; it is said to God in the person of the Prophet, Smite the shepherd, and the sheep will be scattered abroad. (Zech. 13:7.) The good Shepherd is smitten, that He may lay down His life for His sheep, and that of many flocks of divers errors should be made one flock, and one Shepherd.