So when He had washed their feet, taken His garments, and sat down again, He said to them, "Do you know what I have done to you? You call Me Teacher and Lord, and you say well, for so I am. If I then, your Lord and Teacher, have washed your feet, you also ought to wash one another's feet. For I have given you an example, that you should do as I have done to you. Most assuredly, I say to you, a servant is not greater than his master; nor is he who is sent greater than he who sent him. If you know these things, blessed are you if you do them.
Some have taken this occasion to mean that we should be washing one another's feet. That is fine and good I suppose, but do not miss the spiritual and practical lessons Jesus is trying to convey. Service, in Jesus' Kingdom, is the mark not only of true leadership... but it is also expected.