John 6:61
King James Version
“When Jesus knew in himself that his disciples murmured at it, he said unto them, Doth this offend you?”
Context
58This 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.
59These things said he in the synagogue, as he taught in Capernaum.
60Many therefore of his disciples, when they had heard said, This is an hard saying; who can hear it?
61When Jesus knew in himself that his disciples murmured at it, he said unto them, Doth this offend you?
62and if ye shall see the Son of man ascend up where he was before?
63It is the spirit that quickeneth; the flesh profiteth nothing: the words that I speak unto you, are spirit, and are life.
64But 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.