King James Bible, Gospel of St. John: 

26 Jesus answered them and said, Verily, verily, I say unto you, Ye seek me, not because ye saw the miracles, but because
ye did eat of the loaves, and were filled. 27  Labor not for the meat which perishes, but for that meat which endures unto everlasting life, which
the Son of man shall give unto you: for him has God the Father sealed.  28  Then said they unto him, What shall we do, that we might work the
works of God?

29  Jesus answered and said unto them, This is the work of God, that ye believe on him whom he hath sent.
30  They said therefore unto him, What sign show thou then, that we may see, and believe thee? what dost thou work?
31  Our fathers did eat manna in the desert; Ex. 16.4, 15 as it is written, He gave them bread from heaven to eat. Ps. 78.24

32  Then Jesus said unto them, Verily, verily, I say unto you, Moses gave you not that bread from heaven; but my Father gives  
you the true bread from heaven. 33 For the bread of God is he which cometh down from heaven, and gives  life unto the world.

 34 Then said they unto him, Lord, evermore give us this bread.

35  And Jesus said unto them, I am the bread of life: he that cometh to me shall never hunger; and he that believeth on me shall never thirst.
36  But I said unto you, That ye also have seen me, and believe not. 37 All that the Father gives me shall come to me; and him that cometh to me
I will in no wise cast out.

38  For I came down from heaven, not to do mine own will, but the will of him that sent me. 39 And this is the Father's will which hath sent me,
that of all which he hath given me I should lose nothing, but should raise it up again at the last day. 40And this is the will of him that sent me, that
 every one which sees the Son, and believeth on him, may have everlasting life: and I will raise him up at the last day.

41 The Jews then murmured at him, because he said, I am the bread which came down from heaven.

 42 And they said, Is not this Jesus, the son of Joseph, whose father and mother we know? how is it then that he saith, I came down from heaven?

43 Jesus therefore answered and said unto them, Murmur not among yourselves.

 44 No man can come to me, except the Father which hath sent me draw him: and I will raise him up at the last day. 45  It is written in the prophets, And
they shall be all taught of God. [Is. 54.13] Every man therefore that hath heard, and hath learned of the Father, comes  unto me. 46  Not that any man hath
seen the Father, save he which is of God, he hath seen the Father.47 Verily, verily, I say unto you, He that believes on me hath everlasting life.
48  I am that bread of life. 49  Your fathers did eat manna in the wilderness, and are dead.

50 This is the bread which cometh down from heaven, that a man may eat thereof, and not die. 51  I am the living bread which came down from heaven:
if any man eat of this bread, he shall live for ever: and the bread that I will give is my flesh, which I will give for the life of the world.

52  The Jews therefore strove among themselves, saying, How can this man give us his flesh to eat?

53 Then Jesus said unto them, Verily, verily, I say unto you, Except ye eat the flesh of the Son of man, and drink his blood, ye have no life in you.
54  Whoso
eateth my flesh, and drinketh my blood, hath eternal life; and I will raise him up at the last day.55  For my flesh is meat indeed, and my blood
is drink indeed. 56
 He that eats my flesh, and drinks my blood, dwells in me, and I in him. 57 As the living Father hath sent me, and I live by the Father;
so he that eats me, even he shall live by me.

 58  This is that bread which came down from heaven: not as your fathers did eat manna, and are dead: he that eats of this bread shall live for ever.

59  These things said he in the synagogue, as he taught in Caper'na-um.60  Many therefore of his disciples, when they had heard this, said, This is a hard
saying; who can hear it?

61  When Jesus knew in himself that his disciples murmured at it, he said unto them, Doth this offend you? 62 What if ye shall see the Son of man ascend
up where he was before?

63  It is the Spirit that quickens [gives life]; the flesh profits  nothing: the words that I speak unto you, they are spirit, and they are life.

 64 But there are some of you that believe not. For Jesus knew from the beginning who they were that believed not, and who should betray him.