Augustine of Hippo — as excerpted in the Catena Aurea on John 18:25-27

“(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)”