"Signs" for St. John are miracles that point to deeper spiritual truths. Jesus is saying, "You're not thinking spiritually; you came to find me because I fed you." They know about food which perishes. In fact, they needed the miracle of the loaves and the fishes, because they don't have enough food in the first place. Jesus describes himself as the "Son of Man." It's actually Jesus's favorite way to describe himself. What does it mean? Well, we have to go back to the prophet Daniel in the Old Testament. In Daniel 7:9-14, there is one to whom glory and dominion are given, over all the people of the earth, and his kingdom will not be destroyed. And this Son of Man receives it from the Ancient of Days, who is the Father. This prophecy was hundreds of years old, in the time of Jesus. I don't know about you, but it seems to me like it's in the wrong half of the Bible! This is one of the clearest prophecies about the Messiah that you'