It is interesting to note that when Christ hears the disciples wondering who is the greatest among the apostles, he does not say, "It's Peter, weren't you listening?" as if the question were answered by the earlier "You are Peter" comments. In answer, he does not name any disciple, but describes how to recognize the greatest, telling us that "the greatest" is proved by actions. What kind of actions accompany the greatest?
If anyone wants to be first, he must be the very last, and the servant of all.