Haweis(i)
61 Then Jesus, conscious in himself that his disciples murmured concerning this discourse, said unto them, Doth this stumble you?
62 What then if ye see the Son of man ascending where he was formerly?
63 The Spirit is the life-giving power; the flesh contributeth nothing: the declarations which I make to you, they are spirit, and they are life.
64 But there are some of you who do not believe. For Jesus knew from the beginning who they were who did not believe, and who the person was that should betray him.
65 And he said, Therefore have I informed you, That no man can come to me, except it be given him of my Father.