John 6:59-69 (ESV)
Jesus
said these things in the synagogue, as he taught at Capernaum. [60] When many
of his disciples heard it, they said, "This is a hard saying; who can
listen to it?" [61] But Jesus, knowing in himself that his disciples were
grumbling about this, said to them, "Do you take offense at this? [62]
Then what if you were to see the Son of Man ascending to where he was before?
[63] It is the Spirit who gives life; the flesh is of no avail. The words that
I have spoken to you are spirit and life.
[64] But there are some of you who do not believe." (For Jesus knew
from the beginning who those were who did not believe, and who it was who would
betray him.) [65] And he said, "This is why I told you that no one can
come to me unless it is granted him by the Father." [66] After this many
of his disciples turned back and no longer walked with him. [67] So Jesus said to the Twelve, "Do
you want to go away as well?" [68]
Simon Peter answered him, "Lord, to whom shall we go? You have the words
of eternal life, [69] and we have believed, and have come to know, that you are
the Holy One of God."