John 13:14 ASV

¹²  So when he had washed their feet, and taken his garments, and sat down again, he said unto them, Know ye what I have done to you?

¹³  Ye call me, Teacher, and, Lord: and ye say well; for so I am.

¹⁴  If I then, the Lord and the Teacher, have washed your feet, ye also ought to wash one another's feet.

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

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