John 13:11
King James Version
“For he knew who should betray him; therefore said he, Ye are not all clean.”
Context
8Peter saith unto him, Thou shalt never wash my feet. Jesus answered him, If I wash thee not, thou hast no part with me.
9Simon Peter saith unto him, Lord, not my feet only, but also hands and head.
10Jesus saith to him, He that is washed needeth not save to wash feet, but is clean every whit: and ye are clean, but not all.
11For he knew who should betray him; therefore said he, Ye are not all clean.
12So after he had washed their feet, and had taken his garments, and was set down again, he said unto them, Know ye what I have done to you?
13Ye call me Master and Lord: and ye say well; for so I am.
14If I then, Lord and Master, have washed your feet; ye also ought to wash one another’s feet.