John 6:43-55

Jesus answered them, “Stop grumbling among yourselves. 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.