Ellicott's Commentary for English Readers - John 6:62
(62) What and if ye shall see . . .?—Our version adds the word “what,” as will be seen from the italics, but it rightly expresses the sense. Literally, we should read, If then ye should behold the Son of Man ascending up where He was before? The Ascension would be the proof of the coming down from heaven (John 6:58), which is part of the teaching they cannot now accept. The margin refers to the more formal statement of this in John 3:13. The reader should also compare John 20:17, where the... read more
Ellicott's Commentary for English Readers - John 6:61
(61) When Jesus knew in himself that his disciples murmured.—The tenses in the original describe the scene in the present: Jesus as knowing, the disciples as murmuring. The knowledge is in Himself, uninformed by them, and His teaching is addressed to the thoughts of their hearts. They were placing themselves in the position of the Jews (John 6:41), and were making the stepping-stone of spiritual knowledge, up which faith would have walked, into a rock of offence over which blindness fell. read more