Today's Gospel reading at Mass came from Matthew 20. Jesus said to his disciples, "The Son of Man did not come to be served but to serve, and to give his life as a ransom for many." Imagine any other human being saying that he is going to give his life as a ransom for many – that person would have to be either not understanding what he meant or out of his mind. Here I see Jesus speaking as God and our Savior. His later Resurrection is plenty sufficient to back him up on all he had ever said.