"You are blessed if you do them"

"And so when Jesus had washed their feet, and taken his garments, and reclined again, he said to them, 'Do you know what I have done to you? You call me teacher and Lord; and you are right; for so I am.

'If then, the Lord and the teacher, washed your feet, you also ought to wash one another's feet. For I gave you an example that you also should do as I did to you. Truly, truly, I say to you, a slave is not greater than his master; nor is one who is sent greater than the one who sent him.

'If you know these things, you are blessed if you do them'" (Jn 13.12-17).