John 6:60-66 King James Version (KJV)
60 Many therefore of his disciples, when they had heard this, said, This is an hard saying; who can hear it?
61 When Jesus knew in himself that his disciples murmured at it, he said unto them, Doth this offend you?
62 What and if ye shall see the Son of man ascend up where he was before?
63 It is the spirit that quickeneth; the flesh profiteth nothing: the words that I speak unto you, they are spirit, and they are life.
64 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.
65 And he said, Therefore said I unto you, that no man can come unto me, except it were given unto him of my Father.
66 From that time many of his disciples went back, and walked no more with him.
John 6:60-66 Amplified Bible, Classic Edition (AMPC)
60 When His disciples heard this, many of them said, This is a hard and difficult and strange saying (an offensive and unbearable message). Who can stand to hear it? [Who can be expected to listen to such teaching?]
61 But Jesus, knowing within Himself that His disciples were complaining and protesting and grumbling about it, said to them: Is this a stumbling block and an offense to you? [Does this upset and displease and shock and scandalize you?]
62 What then [will be your reaction] if you should see the Son of Man ascending to [the place] where He was before?
63 It is the Spirit Who gives life [He is the Life-giver]; the flesh conveys no benefit whatever [there is no profit in it]. The words (truths) that I have been speaking to you are spirit and life.
64 But [still] some of you fail to believe and trust and have faith. For Jesus knew from the first who did not believe and had no faith and who would betray Him and be false to Him.
65 And He said, This is why I told you that no one can come to Me unless it is granted him [unless he is enabled to do so] by the Father.
66 After this, many of His disciples drew back (returned to their old associations) and no longer accompanied Him.
John 6:60-66 Living Bible (TLB)
60 Even his disciples said, “This is very hard to understand. Who can tell what he means?”
61 Jesus knew within himself that his disciples were complaining and said to them, “Does this offend you? 62 Then what will you think if you see me, the Messiah,[a] return to heaven again? 63 Only the Holy Spirit gives eternal life.[b] Those born only once, with physical birth,* will never receive this gift. But now I have told you how to get this true spiritual life. 64 But some of you don’t believe me.” (For Jesus knew from the beginning who didn’t believe and knew the one who would betray him.)
65 And he remarked, “That is what I meant when I said that no one can come to me unless the Father attracts him to me.”
66 At this point many of his disciples turned away and deserted him.