John 6:52-57
6:52 Then the Jews who were hostile to Jesus began to argue with one another, “How can this man give us his flesh to eat?”
6:53 Jesus said to them, “I tell you the solemn truth, unless you eat the flesh of the Son of Man and drink his blood, you have no life in yourselves.
6:54 The one who eats my flesh and drinks my blood has eternal life, and I will raise him up on the last day.
6:55 For my flesh is true food, and my blood is true drink.
6:56 The one who eats my flesh and drinks my blood resides in me, and I in him.
6:57 Just as the living Father sent me, and I live because of the Father, so the one who consumes me will live because of me.