n°43 / John 13 :

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.
16Verily, verily, I say unto you, The servant is not greater than his lord ; neither he that is sent greater than he that sent him.