John Darby’s Synopsis
 It is not blood here. That assuredly there must be. He came not by water only, but by water and blood; but here the washing is in every respect that of water. The washing from sins in His own blood is never repeated at all in any way. Christ must have suffered often in that case. See Hebrews 9 and 10. In respect of imputation, there is no more conscience of sins.
 The Lord in becoming a man took on Him the form of a servant (Phil. 2). This He never gives up. It might have been thought so when He went into glory, but He is shewing here that it is not so. He is now as in Exodus 21 saying, I love my master, I love my wife, I love my children; I will not go out free; and becoming a servant for ever, even if He could have had twelve legions of angels. Here He is a servant to wash their feet, defiled in passing through this world. In Luke 12 we see that He keeps the place of service in glory. It is a sweet thought that even there He ministers heaven's best blessedness to our happiness.
 On the other hand, Peter died for the Lord. John was left to care for the assembly: it does not appear that he became a martyr.