John 13:14

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

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

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

if then I did wash your feet -- the Lord and the Teacher -- ye also ought to wash one another's feet.

So if I, your Lord and Teacher, have washed your feet, you also should wash one another’s feet.