John 18:27

(Tr. cxiii) Lo, the prophecy of the Physician is fulfilled, the presumption of the sick man demonstrated. That which Peter had said he would do, he had not done. I will lay down my life for Thy sake; but what our Lord had foretold had come to pass, Thou shall deny Me thrice. (Luke 22:34)

Then saith "the kinsman of him whose ear Peter cut off, (grieving at what had taken place,) Did I not see thee in the garden?" But neither did the garden bring him to remember what had taken place, nor the great affection which Jesus there had shown by those words, but all these from pressure of anxiety he banished from his mind. But why have the Evangelists with one accord written concerning him? Not as accusing the disciple, but as desiring to teach us, how great an evil it is not to commit all to God, but to trust to one's self. But do thou admire the tender care of his Master, who, though a prisoner and bound, took great forethought for His disciple, raising Peter up, when he was down, by His look, and launching him into a sea of tears.

(de Con. Evang. iii. 6) Here we find Peter not at the gate, but at the fire, when he denies the second time: so that he must have returned after he had gone out of doors, where Matthew says he was. He did not go out, and another damsel see him on the outside, but another damsel saw him as he was rising to go out, and remarked him, and told those who were by, i. e. those who were standing with her at the fire inside the hall, This fellow also was with Jesus of Nazareth. (Matt. 26:71, 72) He heard this outside, and returned, and swore, I do not know the man. Then John continues: They said therefore unto him, Art not thou also one of His disciples? which words we suppose to have been said to him when he had come back, and was standing at the fire. And this explanation is confirmed by the fact, that besides the other damsel mentioned by Matthew and Mark in the second denial, there was another person, mentioned by Luke, who also questioned him. So John uses the plural: They said therefore unto him. And then follows the third denial: One of the servants of the high priest, being his kinsman whose ear Peter cut off, saith, Did not I see thee in the garden with Him? That Matthew and Mark speak of the party who here question Peter in the plural number, whereas Luke mentions only one, and John also, adding that that one was the kinsman of him whose ear Peter cut off, is easily explained by supposing that Matthew and Mark used the plural number by a common form of speech for the singular; or that one who had observed him most strictly put the question first, and others followed it up, and pressed Peter with more.

But the evangelist, after saying that Annas sent Him bound unto Caiaphas, returns to the place of his narrative, where he had left Peter, in order to explain what had taken place in Annas' house in regard to his threefold denial. "But Peter was standing," he says, "and warming himself." He thus repeats what he had already stated before; and then adds what follows. "They said therefore unto him, Art thou also one of his disciples? He denied, and said, I am not." He had already denied once; this is the second time. And then, that the third denial might also be fulfilled, "one of the servants of the high priest, being his kinsman whose ear Peter cut off, saith, Did I not see thee in the garden with him? Peter then denied again, and immediately the cock crew." Behold, the prediction of the Physician is fulfilled, the presumption of the sick man is brought to the light. For there is no performance of what the latter had asserted, "I will lay down my life for Thy sake;" but a performance of what the former had predicted, "Thou shall thrice deny me."

Mystically, by the first denial of Peter are denoted those who before our Lord's Passion denied that He was God, by the second, those who did so after His resurrection. So by the first crowing of the cock His resurrection is signified; by the second, the general resurrection at the end of the world. By the first damsel, who obliged Peter to deny, is denoted lust, by the second, carnal delight: by one or more servants, the devils who persuade men to deny Christ.