John 13:12-15 CSB
When Jesus had washed their feet and put on his outer clothing, he reclined again and said to them, “Do you know what I have done for you? You call me Teacher and Lord — and you are speaking rightly, since that is what I am. So if I, your Lord and Teacher, have washed your feet, you also ought to wash one another’s feet. For I have given you an example, that you also should do just as I have done for you.
CSB: Christian Standard Bible