Jesus said to them, "I tell you the truth, it is not Moses who has given you the bread from heaven, but it is my Father who gives you the true bread from heaven. For the bread of God is he who comes down from heaven and gives life to the world.
People often want to murder the messenger but here we have evidence that the Jews of the time regarded the messenger, Moses, too highly. God was regarded so highly that they could not even say his name (YHWH). Consequently Moses was thought of as more than God's messenger.
We are apt to fall into the same trap. How many earthly preachers are lauded beyond their due?
We have already heard mention of the water of eternal life and now the bread of eternal life. These are metaphors!. It is the death of Jesus in full recompence for our sins that is the source of eternal life. Not just for our individual sins but for our sinful attitude, our tendency to go on sinning.