When you go to another to wash his feet, or when another comes to wash your feet, be concerned as to the temperature of the water!
Some come with boiling hot water. They are so angry, so upset, so distracted by something that has happened in the past—and so mad about it—that they come to the other person and say, “Here, stick your feet in here!” Nobody wants…
Baker Books , 1500 Illustrations for Biblical Preaching, by Michael P. Green