John 6:61-71

61But Jesus, knowing in himself that his disciples murmur concerning this, said to them, Does this offend you? 62If then ye see the Son of man ascending up where he was before? 63It is the Spirit which quickens, the flesh profits nothing: the words which I have spoken unto you are spirit and are life. 64But there are some of you who do not believe. For Jesus knew from the beginning who they were who did not believe, and who would deliver him up. 65And he said, Therefore said I unto you, that no one can come to me unless it be given to him from the Father. 66From that [time] many of his disciples went away back and walked no more with him. 67Jesus therefore said to the twelve, Will ye also go away? 68Simon Peter answered him, Lord, to whom shall we go? thou hast words of life eternal; 69and we have believed and known that thou art the holy one of 1God. 70Jesus answered them, Have not I chosen you the twelve? and of you one is a devil. 71Now he spoke of Judas [the son] of Simon, Iscariote, for he [it was who] should deliver him up, being one of the twelve.