John 13:13-17

You call me Master and Lord. And you say well: for so I am.

If then I being your Lord and Master, have washed your feet; you also ought to wash one another's feet.

For I have given you an example, that as I have done to you, so you do also.

Amen, amen, I say to you: The servant is not greater than his lord: neither is the apostle greater than he that sent him.

If you know these things, you shall be blessed if you do them.