John 6:53-55
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.