Jesus' disciples heard this. Many of them said, "This is a hard teaching. Who can accept it?"
Jesus was aware that his disciples were complaining about his teaching. So he said to them, "Does this upset you?
What if you see the Son of Man go up to where he was before?
The Holy Spirit gives life. The body means nothing at all. The words I have spoken to you are from the Spirit. They give life.
But there are some of you who do not believe." Jesus had known from the beginning which of them did not believe. And he had known who was going to hand him over to his enemies.
So he continued speaking. He said, "This is why I told you that no one can come to me unless the Father helps him."
From this time on, many of his disciples turned back. They no longer followed him.
"You don't want to leave also, do you?" Jesus asked the Twelve.
Simon Peter answered him, "Lord, who can we go to? You have the words of eternal life.
We believe and know that you are the Holy One of God."
Then Jesus replied, "Didn't I choose you, the 12 disciples? But one of you is a devil!"
He meant Judas, the son of Simon Iscariot. Judas was one of the Twelve. But later he was going to hand Jesus over to his enemies.