John 13:13 YLT

¹¹  for he knew him who is delivering him up; because of this he said, 'Ye are not all clean.'

¹²  When, therefore, he washed their feet, and took his garments, having reclined (at meat) again, he said to them, 'Do ye know what I have done to you?

¹³  ye call me, The Teacher and The Lord, and ye say well, for I am;

¹⁴  if then I did wash your feet -- the Lord and the Teacher -- ye also ought to wash one another's feet.

¹⁵  'For an example I gave to you, that, according as I did to you, ye also may do;