John 13:6 in the King James Version
Then cometh he to Simon Peter: and Peter saith unto him, Lord, dost thou wash my feet?
Context
5 Then he poured water into the basin, and began to wash the disciples’ feet and to wipe them with the towel that was wrapped around him.
6 Then he came to Simon Peter. He said to him, “Lord, do you wash my feet?”
7 Jesus answered him, “You don’t know what I am doing now, but you will understand later.”