Jesus said, "Have the people sit down." Now there was much grass in that place. So the men sat down, in number about five thousand.

 Jesus goes on, not to try to prove his claim, but to state that some day events will prove it. What he is saying is this: "You find it difficult to believe that I am the bread, the essential of life, which came down from heaven. Well then, you will have no difficulty in accepting that claim when some day you see me ascending back to heaven." It is a forecast of the Ascension. It means that the Resurrection is the guarantee of the claims of Jesus. He was not one who lived nobly and died gallantly for a lost cause; he was the one whose claims were vindicated by the fact that he rose again. 