Jesus took a towel, and wrapped a towel around his waist. Then he poured water into the basin, and began to wash the disciples' feet, and to wipe them with the towel that was wrapped around him.
So when he had washed their feet, put his outer garment back on, and sat down again, he said to them, "Do you know what I have done to you? You call me, 'Teacher' and 'Lord.' You say so correctly, for so I am. If I then, the Lord and the 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 as I have done to you. Most assuredly I tell you, a servant is not greater than his lord, neither one who is sent greater than he who sent him. If you know these things, blessed are you if you do them. I don't speak concerning all of you. I know whom I have chosen. Most assuredly I tell you, he who receives whomever I send, receives me; and he who receives me, receives him who sent me."
John 13,4