John 6:30-33, 48-51
So they said to him, "Then what sign do you do, that we may see, and believe you? What work do you perform? Our fathers ate the manna in the wilderness; as it is written, 'He gave them bread from heaven to eat.'"
Jesus then said to them, "Truly, truly, I say to you, it was not Moses who gave you the bread from heaven; my Father gives you the true bread from heaven. For the bread of God is that which comes down from heaven, and gives life to the world."
"I am the bread of life. Your fathers ate the manna in the wilderness, and they died. This is the bread which comes down from heaven, that a man may eat of it and not die. I am the living bread which came down from heaven; if any one eats of this bread, he will live for ever; and the bread which I shall give for the life of the world is my flesh."