John 13:12-15

When he had finished washing their feet, he put on his clothes and sat down again. He asked, “Do you understand what I have just done for you? You call me ‘Teacher’ and ‘Lord,’ and you are right, because that is what I am. If I, your Lord and Teacher, have washed your feet, you also should wash each other’s feet. I did this as an example so that you should do as I have done for you.