John 13:6-10 NIV

[6] He came to Simon Peter, who said to him, “Lord, are you going to wash my feet?” [7] Jesus replied, “You do not realize now what I am doing, but later you will understand.” [8] “No,” said Peter, “you shall never wash my feet.” Jesus answered, “Unless I wash you, you have no part with me.” [9] “Then, Lord,” Simon Peter replied, “not just my feet but my hands and my head as well!” [10] Jesus answered, “Those who have had a bath need only to wash their feet; their whole body is clean. And you are clean, though not every one of you.”