In today's Gospel reading from Matthew 20, the mother of the sons of Zebedee asked Jesus to command that her two sons sit, one at his right and the other at his left, in his kingdom. That was a totally self-centered request. Contrast this with what the Lord said at the end of this Gospel reading: "The Son of Man did not come to be served but to serve and to give his life as a ransom for many." A diametrically opposite statement. To me, this saying alone shows that Jesus was totally sane, knew exactly what he's saying, and spoke the truth.
When I received the body of Christ today, I realized that he was serving me ~ giving me new life. If serving is good enough for the Lord, it should be plenty good for us. And the best way to serve him is to surrender ourselves completely to him. He has given himself to us ~ let's give ourselves to him.