The people said, "Our ancestors ate manna in the desert, just as the scripture says, 'He gave them bread from heaven to eat.' " Jesus answered, "What Moses gave you was not the bread from heaven; it is my Father who gives you the real bread from heaven."
Jesus is referring to the fact that even when God gave the whole Israelite community manna the people still complained; they were not satisfied. God then gave the Hebrews quail and they continued to be dissatisfied. Later on the whole Israelite community complained to Moses and said, "Give us water to drink." Moses struck a rock and water came out of it for people to drink. But the whole Israelite community continued not to be satisfied. They continued to hunger and thirst after righteousness.
"I am the bread of life," Jesus told them. "…