John 6:53-58

53Jesus therefore said to them, Verily, verily, I say unto you, Unless ye shall have eaten the flesh of the Son of man, and drunk his blood, ye have no life in yourselves.

54He that eats my flesh and drinks my blood has life eternal, and I will raise him up at the last day:

55for my flesh is truly food and my blood is truly drink.

56He that eats my flesh and drinks my blood dwells in me and I in him.

57As the living Father has sent me and I live on account of the Father, he also who eats me shall live also on account of me.

58This is the bread which has come down out of heaven. Not as the fathers ate and died: he that eats this bread shall live for ever.