Don't work for the food which perishes, but for the food which remains to eternal life, which the Son of Man will give to you. For God the Father has sealed him."

 To most of us this is a very difficult passage. It speaks in language and moves in a world of ideas which are quite strange to us and which may seem even fantastic and grotesque. But to those who heard it first, it was moving among familiar ideas which went back to the very childhood of the race. 