It is probable that these Jews were expecting Jesus to rain down manna on them the way God did before in the wilderness. After all, anyone who could feed five thousand men with one small lunch should be able to produce manna. They were still thinking of physical food.
The word "manna" means literally "what is it?" The children of Israel said, "It is manna: for they wist (or knew) not what it was." (Ex. 16:15) Manna was a nutritious food which appeared on the ground every morning shortly after the children of Israel left Egypt and began their 40-year wandering in the wilderness. Moses called it "bread which the Lord hath given you to eat."
The Lord, in speaking to Moses, called it "bread from heaven." It was small and round, like coriander seed, and was white in color or yellowish, like bdellium. The people, after gathering it, ground it in mills or...
