So when he had washed their feet
and put his garments back on and reclined at table again,
he said to them, “Do you realize what I have done for you?
You call me ‘teacher’ and ‘master,’  and rightly so, for indeed I am.
If I, therefore, the master and teacher, have washed your feet,
you ought to wash one another’s feet.
I have given you a model to follow,
so that as I have done for you, you should also do.”
(John 13:12-15)