John 13:5-9

After that he poureth water into a bason, and began to wash the disciples’ feet, and to wipe them with the towel wherewith he was girded.

Then cometh he to Simon Peter: and Peter saith unto him, Lord, dost thou wash my feet?

Jesus answered and said unto him, What I do thou knowest not now; but thou shalt know hereafter.

Peter saith unto him, Thou shalt never wash my feet. Jesus answered him, If I wash thee not, thou hast no part with me.

Simon Peter saith unto him, Lord, not my feet only, but also my hands and my head.