John 13:4-7

So during the meal Jesus stood up and took off his outer clothing. Taking a towel, he wrapped it around his waist. Then he poured water into a bowl and began to wash the followers’ feet, drying them with the towel that was wrapped around him. Jesus came to Simon Peter, who said to him, “Lord, are you going to wash my feet?” Jesus answered, “You don’t understand now what I am doing, but you will understand later.”