John 6:61-65 Douay-Rheims 1899 American Edition (DRA)
61 Many therefore of his disciples, hearing it, said: This saying is hard, and who can hear it?
62 But Jesus, knowing in himself, that his disciples murmured at this, said to them: Doth this scandalize you?
63 If then you shall see the Son of man ascend up where he was before?
64 It is the spirit that quickeneth: the flesh profiteth nothing. The words that I have spoken to you, are spirit and life.
65 But there are some of you that believe not. For Jesus knew from the beginning, who they were that did not believe, and who he was, that would betray him.