John 6:35-59 New Revised Standard Version (NRSV)
35 Jesus said to them, “I am the bread of life. Whoever comes to me will never be hungry, and whoever believes in me will never be thirsty. 36 But I said to you that you have seen me and yet do not believe. 37 Everything that the Father gives me will come to me, and anyone who comes to me I will never drive away; 38 for I have come down from heaven, not to do my own will, but the will of him who sent me. 39 And this is the will of him who sent me, that I should lose nothing of all that he has given me, but raise it up on the last day. 40 This is indeed the will of my Father, that all who see the Son and believe in him may have eternal life; and I will raise them up on the last day.”
41 Then the Jews began to complain about him because he said, “I am the bread that came down from heaven.” 42 They were saying, “Is not this Jesus, the son of Joseph, whose father and mother we know? How can he now say, ‘I have come down from heaven’?” 43 Jesus answered them, “Do not complain among yourselves. 44 No one can come to me unless drawn by the Father who sent me; and I will raise that person up on the last day. 45 It is written in the prophets, ‘And they shall all be taught by God.’ Everyone who has heard and learned from the Father comes to me. 46 Not that anyone has seen the Father except the one who is from God; he has seen the Father. 47 Very truly, I tell you, whoever believes has eternal life. 48 I am the bread of life. 49 Your ancestors ate the manna in the wilderness, and they died. 50 This is the bread that comes down from heaven, so that one may eat of it and not die. 51 I am the living bread that came down from heaven. Whoever eats of this bread will live forever; and the bread that I will give for the life of the world is my flesh.”
52 The Jews then disputed among themselves, saying, “How can this man give us his flesh to eat?” 53 So Jesus said to them, “Very truly, I tell you, unless you eat the flesh of the Son of Man and drink his blood, you have no life in you. 54 Those who eat my flesh and drink my blood have eternal life, and I will raise them up on the last day; 55 for my flesh is true food and my blood is true drink. 56 Those who eat my flesh and drink my blood abide in me, and I in them. 57 Just as the living Father sent me, and I live because of the Father, so whoever eats me will live because of me. 58 This is the bread that came down from heaven, not like that which your ancestors ate, and they died. But the one who eats this bread will live forever.” 59 He said these things while he was teaching in the synagogue at Capernaum.