(12) And was set down again.--This means in the reclining position customary at meals. Comp. Luke 11:37; Luke 22:14; and in this Gospel John 6:10; John 21:20. Here it implies that the washing the feet preceded the supper (John 13:1).

Know ye what I have done to you?--This question is asked, not to be answered, but to direct their attention to what He had done, and to the interpretation which follows--"Do ye perceive what I have done? This is the meaning of it."

Verses 12-17. - The Lord gives other practical instructions based on his own humble self-obliterating discharge of a duty which it was obvious that, in their desire to be great, they had one and all abstained from doing even for their Lord. Out of it he draws the great lesson of mutual love and brotherly regard. Verse 12. - So when he had washed their feet - the interruption of Peter had brought forth the wonderful and weighty replies, and then, in awfulness and great amazement, the process went on. John and Judas as well as Peter submitted. Matthew and Thomas, Philip and Nathanael, and the rest yielded and received the deep, ineffaceable impression - and taken his garments he was no longer in the form of a slave, but of their Teacher and Lord - and again reclined at their head, he said unto them, Know ye what I have done unto you? They must consider the meaning of it all. There was no affectation of humility about it. The purpose of the Lord was distinctly practical and ethical. So when he ceased his manifestation in the likeness of sinful flesh, and was set down on the right hand of God, he sent his Spirit to teach them all things. Moulton calls attention to the trial arrangement. Three particulars precede the great utterance that follows (cf. vers. 1-3; cf. also John 16:6; John 16:8, etc.; John 17:22, 23), as well as the three topics of the intercessory prayer; also the three words from the cross (John 19:27-30) and three appearances to the disciples (John 21:14). This may be compared with the use of three throughout the Apocalypse.

13:1-17 Our Lord Jesus has a people in the world that are his own; he has purchased them, and paid dear for them, and he has set them apart for himself; they devote themselves to him as a peculiar people. Those whom Christ loves, he loves to the end. Nothing can separate a true believer from the love of Christ. We know not when our hour will come, therefore what we have to do in constant preparation for it, ought never to be undone. What way of access the devil has to men's hearts we cannot tell. But some sins are so exceedingly sinful, and there is so little temptation to them from the world and the flesh, that it is plain they are directly from Satan. Jesus washed his disciples' feet, that he might teach us to think nothing below us, wherein we may promote God's glory, and the good of our brethren. We must address ourselves to duty, and must lay aside every thing that would hinder us in what we have to do. Christ washed his disciples' feet, that he might signify to them the value of spiritual washing, and the cleansing of the soul from the pollutions of sin. Our Lord Jesus does many things of which even his own disciples do not for the present know the meaning, but they shall know afterward. We see in the end what was the kindness from events which seemed most cross. And it is not humility, but unbelief, to put away the offers of the gospel, as if too rich to be made to us, or too good news to be true. All those, and those only, who are spiritually washed by Christ, have a part in Christ. All whom Christ owns and saves, he justifies and sanctifies. Peter more than submits; he begs to be washed by Christ. How earnest he is for the purifying grace of the Lord Jesus, and the full effect of it, even upon his hands and head! Those who truly desire to be sanctified, desire to be sanctified throughout, to have the whole man, with all its parts and powers, made pure. The true believer is thus washed when he receives Christ for his salvation. See then what ought to be the daily care of those who through grace are in a justified state, and that is, to wash their feet; to cleanse themselves from daily guilt, and to watch against everything defiling. This should make us the more cautious. From yesterday's pardon, we should be strengthened against this day's temptation. And when hypocrites are discovered, it should be no surprise or cause of stumbling to us. Observe the lesson Christ here taught. Duties are mutual; we must both accept help from our brethren, and afford help to our brethren. When we see our Master serving, we cannot but see how ill it becomes us to domineer. And the same love which led Christ to ransom and reconcile his disciples when enemies, still influences him.So after he had washed their feet,.... Not Peter's only, but the rest of the disciples also: some have thought, that he washed only the feet of some of them, and not all; but it seems, by this expression, that he performed this service to each of them: and when he had gone through it with everyone of them:

and had taken his garments, and put them on,

and was sat down again; at the table with his disciples, supper not being yet ended; when having done his work as a servant, he reassumes the air and authority of Lord and master, and begins to teach and instruct, into the design and use of what he had been doing, which he introduces by putting this question;

he said unto them, know ye what I have done to you? They knew the outward action he had done to them, that he had washed their feet; but, as yet, they did not know the mystery of it, Christ's design in it, and what he would have them learn from it.