John Chrysostom
What are you saying, Peter? Christ said, "You cannot," and you say, "I can"? Therefore you will learn by experience itself that your love, without help from above, is nothing.
From this it is clear that Christ allowed Peter's fall for Peter's own benefit. By His earlier actions He wished to bring him to understanding. But since Peter remained in his fervor, Christ did not lead him or move him to deny Him. Yet He left him without help, so that he might know his own weakness.
Christ said that He must be betrayed, and Peter says: "Be merciful to Yourself; this shall not happen to You" (Mt 16:22). He was rebuked, but did not understand. On the contrary, when Christ wished to wash his feet, he again said: "You shall never wash my feet" (Jn 13:8).
Read more (407 words)
And now, when he heard, "You cannot follow Me now," he again says: "Even if all are scandalized because of You, I will not be scandalized" (Mt 26:33). Having thus become accustomed to contradict Christ, he could easily have fallen into pride.
For this reason Christ finally teaches him not to oppose Him. Luke hints at this when he says that Christ said: "I have prayed for you, that your faith may not fail" (Lk 22:32), that is, that you may not perish utterly.
Through all this He teaches him humility and shows that human nature in itself is nothing. Since great love moved Peter to contradiction, Christ finally brings him to understanding. He does this so that Peter may not suffer the same thing later, but, remembering what happened to him, may know himself.
And see how powerful the fall was. He underwent this fall not once and not twice, but became so afraid that in a short time he uttered the word of denial three times. Thus he might know that he did not so much love as he was loved.
Yet after such a fall Christ again says: "Do you love Me more than these?" (Jn 21:15). Therefore this fall occurred not from coldness, but because he was deprived of help from above.
Christ accepts Peter's love, but cuts off the contradiction arising from it. If you love, you must obey the one whom you love. He said both to you and to those with you, "You cannot." Why then do you argue?
Do you not know what it means to reject the words of God? Since you do not wish to understand from this that what I say cannot fail to be, you will learn it from the denial, though it then seemed to you far more unbelievable.
You did not even know about this, while you were conscious of the other thing in your soul. Yet what you did not expect at all came to pass.
"I will lay down my soul for You." Peter had heard that there is nothing greater than this love. Therefore, being insatiable and wishing to attain the very highest love, he immediately rushed toward it.
But Christ, showing that He alone can declare this with certainty, says: "The rooster will not crow," that is, even now. Indeed, little time remained, for He was speaking late at night, when the first and second watches had already passed.