John 13:4-8

So he got up from the table, took off his robe, wrapped a towel around his waist, and poured water into a basin. Then he began to wash the disciples’ feet, drying them with the towel he had around him. When Jesus came to Simon Peter, Peter said to him, “Lord, are you going to wash my feet?” Jesus replied, “You don’t understand now what I am doing, but someday you will.” “No,” Peter protested, “you will never ever wash my feet!” Jesus replied, “Unless I wash you, you won’t belong to me.”