John 6:44-58

No one can come to me unless the Father who sent me draws him, and I will raise him up on the last day. It is written in the Prophets: And they will all be taught by God. Everyone who has listened to and learned from the Father comes to me —  not that anyone has seen the Father except the one who is from God. He has seen the Father. “Truly I tell you, anyone who believes has eternal life. I am the bread of life. Your ancestors ate the manna in the wilderness, and they died. This is the bread that comes down from heaven so that anyone may eat of it and not die. I am the living bread that came down from heaven. If anyone eats of this bread he will live forever. The bread that I will give for the life of the world is my flesh.” At that, the Jews argued among themselves, “How can this man give us his flesh to eat?” So Jesus said to them, “Truly I tell you, unless you eat the flesh of the Son of Man and drink his blood, you do not have life in yourselves. The one who eats my flesh and drinks my blood has eternal life, and I will raise him up on the last day, because my flesh is true food and my blood is true drink. The one who eats my flesh and drinks my blood remains in me, and I in him. Just as the living Father sent me and I live because of the Father, so the one who feeds on me will live because of me. This is the bread that came down from heaven; it is not like the manna your ancestors ate — and they died. The one who eats this bread will live forever.”