John 13:12

(Tr. lviii. 2) Our Lord, mindful of His promise to Peter that he should know the meaning of His act, Thou shalt know hereafter, now begins to teach him: So after He had washed their feet, and had taken His garments, and was sat down again, He said unto them, Know ye what I have done to you?

"So, after He had washed their feet, and had taken His garments, and was set down again, He said unto them, Know ye what I have done to you?" Now it is that the blessed Peter gets that promise fulfilled: for he had been put off when, in the midst of his trembling and asserting, "Thou shalt never wash my feet," he received the answer, "What I do, thou knowest not now, but thou shalt know hereafter." Here, then, is that very hereafter; it is now time to tell what was a little ago deferred. Accordingly, the Lord, mindful of His foregoing promise to make him understand an act of His so unexpected, so wonderful, so frightening, and, but for His own still more terrifying rejoinder, impossible to be permitted, that the Master not only of themselves, but of angels, and the Lord not only of them, but of all things, should wash the feet of His own disciples and servants: having then promised to let him know the meaning of so important an act, when He said, "Thou shalt know afterwards," begins now to show them what it was that He did. "Ye call me," He says, "Master and Lord: and ye say well; for so I am." "Ye say well," for ye only say the truth; I am indeed what ye say. There is a precept laid on man: "Let not thine own mouth praise thee, but the mouth of thy neighbor." For self-pleasing is a perilous thing for one who has to be on his guard against falling into pride. But He who is over all things, however much He commend Himself, cannot exalt Himself above His actual dignity: for God cannot be rightly termed arrogant. For it is to our advantage to know Him, not to His; nor can any one know Him, unless that self-knowing One make Himself known. If He, then, by abstaining from self-commendation, wish, as it were, to avoid arrogance, He will deny us the power of knowing Him. […]

And this is the goal of the teacher, as teacher, for the disciple. He wants to make the disciple like himself, so that he may no longer need the teacher, as teacher, although he will need him in other respects.

He now clearly explains the object of what He has done, and says that this example of incomparable humility had been set forth for the sake of the benefit therefrom derived for us: and in making His reproof of pride unanswerable, He is constrained to put forward the conspicuous example of His Own Person. For in such an act anyone may behold the incomparable greatness of His humiliation. When anything is in itself considered most ignoble, or held to be quite undignified, in what manner could it possibly suffer degradation or pass to a stage of lower esteem? For anyone may see that in such a thing, if in nothing else, there is an original and natural baseness. But when we have been observing an object pre-eminent for its high position, our wonder is excited if we see it suddenly humiliated: for it has descended to a sphere not its own. Therefore it was that our Lord Jesus the Christ felt constrained, in giving the lesson of humility to His disciples, or rather through them to all that dwell on the earth, not merely to say: "As I washed your feet, so also ought ye to do," but rather to bring into conspicuous prominence His peculiar claim to their obedience; and, while setting forth to their minds the glory that was His by natural right, by His action to put to shame the vain-glorious. For He says: Ye yourselves style Me Lord, and Master; and ye say well, for so I am. And observe how in the midst of His discourse He showed His watchful care for the edification of those who believe, and was not unaware of the evil-speaking of the unholy heretics. For after saying to His own disciples: Ye style Me Lord, and Master; then, lest any should suppose that He is not by nature Lord or Master, but that He holds the title simply as a mark of honour from those who shall be devoted to Him, He has emphatically added, to dispel such suggestions, the words: And ye say well, for so I am. […]

Now when He had washed their feet, and taken His garments, and sat down, He said, "Know ye what I have done unto you?" He no longer addresseth Himself to Peter only, but to them all. "Ye call Me Lord and Master, and ye say well, for so I am." "Ye call Me." He taketh to Him their judgment, and then that the words may not be thought to be words of their kindness, He addeth, "for so I am." By introducing a saying of theirs, He maketh it not offensive, and by confirming it Himself when introduced from them, unsuspected. "For so I am," He saith. Seest thou how when He converseth with the disciples, He speaketh revealing more what belongeth unto Himself?