John 6:44-54

44No man can come to me, except the Father who hath sent me draw him: and I will raise him up at the last day. 45It is written in the prophets, And they shall be all taught from God. Every man therefore that hath heard, and hath learned from the Father, cometh to me. 46Not that any man hath seen the Father, except he who is from God, he hath seen the Father. 47Verily, verily, I say to you, He that believeth on me hath everlasting life. 48I am that bread of life. 49Your fathers ate manna in the wilderness, and are dead. 50This is the bread which cometh down from heaven, that a man may eat of it, and not die. 51I am the living bread which came down from heaven: if any man shall 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. 52The Jews therefore began to dispute among themselves, saying, How can this man give us his flesh to eat? 53Then Jesus said to them, Verily, verily, I say to you, Except ye eat the flesh of the Son of man, and drink his blood, ye have no life in you. 54Whoever eateth my flesh, and drinketh my blood, hath eternal life; and I will raise him up at the last day.