John 13:12-20 - The Meaning Of Footwashing
12 So when He had washed their feet and had put on His clothes and taken His place at the table, He said to them again: "Do you understand what I have done to you? 13 You call me Teacher and Lord, and you are right in calling me so, for that is what I am. 14 If I then, your Lord and Teacher, have washed your feet, you too ought to wash one another's feet. 15 For I have set you an example, in order that you too may practice what I have done to you.
16 I most solemnly say to you, no slave is superior to his master, and no messenger is greater than the man who sends him. 17 If you know all this, happy are you if you practice it. 18 I do not mean all of you. I know whom I have chosen, but I know that the Scriptures must be fulfilled: 'The man who is eating my bread has lifted his heel against me.'
19 From now on I will tell you things before they take place, so that when they do take place, you may believe that I am the Christ. 20 I most solemnly say to you, whoever welcomes any messenger I send welcomes me, and whoever welcomes me welcomes Him who has sent me."