John 13:12-15

12So after he had washed their feet, and had taken his garments, and was seated again, he said to 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, your Lord and Master, have washed your feet; ye also ought to wash one another’s feet.

15For I have given you an example, that ye should do as I have done to you.