John 6:53-63

So Jesus said to them, “Truly, truly, I say to you, unless you eat the flesh of the Son of Man and drink His blood, you have no life in yourselves. He who eats My flesh and drinks My blood has eternal life, and I will raise him up on the last day. For My flesh is true food, and My blood is true drink. He who eats My flesh and drinks My blood abides in Me, and I in him. As the living Father sent Me, and I live because of the Father, so he who eats Me, he also will live because of Me. This is the bread which came down out of heaven; not as the fathers ate and died; he who eats this bread will live forever.” These things He said in the synagogue as He taught in Capernaum. Therefore many of His disciples, when they heard this said, “This is a difficult statement; who can listen to it?” But Jesus, conscious that His disciples grumbled at this, said to them, “Does this cause you to stumble? What then if you see the Son of Man ascending to where He was before? It is the Spirit who gives life; the flesh profits nothing; the words that I have spoken to you are spirit and are life.