John 6:62
“What and if ye shall see the Son of man ascend up where he was before?”
Many therefore of his disciples, when they had heard this, said, This is an hard saying; who can hear it?
When Jesus knew in himself that his disciples murmured at it, he said unto them, Doth this offend you?
What and if ye shall see the Son of man ascend up where he was before?
It is the spirit that quickeneth; the flesh profiteth nothing: the words that I speak unto you, they are spirit, and they are life.
But there are some of you that believe not. For Jesus knew from the beginning who they were that believed not, and who should betray him.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Related Verses
“And they said, Is not this Jesus, the son of Joseph, whose father and mother we know? how is it then that he saith, I came down from heaven?”
“Then said Jesus unto the twelve, Will ye also go away?”
“When Jesus knew in himself that his disciples murmured at it, he said unto them, Doth this offend you?”
“Many therefore of his disciples, when they had heard this, said, This is an hard saying; who can hear it?”
“This is that bread which came down from heaven: not as your fathers did eat manna, and are dead: he that eateth of this bread shall live for ever.”