It is the spirit that gives life; the flesh profits nothing: the words that I speak unto you, they are spirit, and they are life.
All Commentaries on John 6:63 Go To John 6
George Leo Haydock
AD 1849
If then you shall see Christ, by mentioning his ascension, by this instance of his power and divinity, would confirm the truth of what he had before asserted; at the same time, correct their gross apprehension of eating his flesh and drinking his blood, in a vulgar and carnal manner, by letting them know he should take his whole body living with him to heaven; and consequently not suffer it to be, as they supposed, divided, mangled, and consumed upon earth. (Challoner)
The sense of these words, according to the common exposition, is this: you murmur at my words, as hard and harsh, and you refuse now to believe them: when I shall ascend into heaven, from whence I came into the world, and when my ascension, and the doctrine that I have taught you, shall be confirmed by a multitude of miracles, then shall you and many others believe. (Witham)