John 6:51-53

51I am the living bread that came down from heaven. Whoever eats this bread will live forever. This bread is my flesh, which I will give for the life of the world.”

52Then the Jews began to argue sharply among themselves, “How can this man give us his flesh to eat?” 53Jesus said to them, “Very truly I tell you, unless you eat the flesh of the Son of Man and drink his blood, you have no life in you.