John 6:59-63

These things He said in the synagogue as He taught in Capernaum.

So then many of His disciples, when they heard this, said, “This statement is very unpleasant; who can listen to it?”

But Jesus, aware that His disciples were complaining about this, said to them, “Is this offensive to you?

What then if you see the Son of Man ascending to where He was before?

It is the Spirit who gives life; the flesh provides no benefit; the words that I have spoken to you are spirit, and are life.