John 13:4-17.
Jesus got up from the meal and started to wash his disciples feet. He came to Peter. Peter said " Lord, are you going to wash my feet?". Jesus replied," You do not realize now what I am doing, but later you will understand.". "No, you shall never wash my feet!", Peter said. Jesus taught him it's necessary. When he finished washing their feet, Jesus said,"I, your Lord and Teacher, have washed your feet, you also should wash one another's feet. I tell you the truth, no servant is greater than his master. Now that you know these things, you will be blessed if you do them."
