John 6:43-53

43 Jesus answered, therefore, and said to them, `Murmur not one with another;
44 no one is able to come unto me, if the Father who sent me may not draw him, and I will raise him up in the last day;
45 it is having been written in the prophets, And they shall be all taught of God; every one therefore who heard from the Father, and learned, cometh to me;
46 not that any one hath seen the Father, except he who is from God, he hath seen the Father.
47 `Verily, verily, I say to you, He who is believing in me, hath life age-during;
48 I am the bread of the life;
49 your fathers did eat the manna in the wilderness, and they died;
50 this is the bread that out of the heaven is coming down, that any one may eat of it, and not die.
51 `I am the living bread that came down out of the heaven; if any one may eat of this bread he shall live -- to the age; and the bread also that I will give is my flesh, that I will give for the life of the world.'
52 The Jews, therefore, were striving with one another, saying, `How is this one able to give us [his] flesh to eat?'
53 Jesus, therefore, said to them, `Verily, verily, I say to you, If ye may not eat the flesh of the Son of Man, and may not drink his blood, ye have no life in yourselves;
Young's Literal Translation is in the public domain.