| Gill's Exposition of the Entire Bible And Methuselah lived, after he begat Lamech, seven hundred eighty and two years,.... The Greek version is eight hundred and two years, and so makes the sum total of his life the same; but the Samaritan version only six hundred and fifty three, and so makes his whole life but seven hundred and twenty; and thus, instead of being the oldest, he is made the youngest of the antediluvian patriarchs, excepting his father Enoch: and begat sons and daughters; some, it is highly probable, before he beget Lamech, since then he was near two hundred years of age, as well as others after.
Geneva Study BibleAnd Methuselah lived after he begat Lamech seven hundred eighty and two years, and begat sons and daughters:
King James Translators' NotesLamech: Heb. Lemech
Jamieson-Fausset-Brown Bible Commentary26. Lamech-a different person from the one mentioned in the preceding chapter [Ge 4:18]. Like his namesake, however, he also spoke in numbers on occasion of the birth of Noah-that is, "rest" or "comfort" [Ge 5:29, Margin]. "The allusion is, undoubtedly, to the penal consequences of the fall in earthly toils and sufferings, and to the hope of a Deliverer, excited by the promise made to Eve. That this expectation was founded on a divine communication we infer from the importance attached to it and the confidence of its expression" [Peter Smith].
Matthew Henry's Concise Commentary5:25-32 Methuselah signifies, 'he dies, there is a dart,' 'a sending forth,' namely, of the deluge, which came the year that Methuselah died. He lived 969 years, the longest that any man ever lived on earth; but the longest liver must die at last. Noah signifies rest; his parents gave him that name, with a prospect of his being a great blessing to his generation. Observe his father's complaint of the calamitous state of human life, by the entrance of sin, and the curse of sin. Our whole life is spent in labour, and our time filled up with continual toil. God having cursed the ground, it is as much as some can do, with the utmost care and pains, to get a hard livelihood out comfort us. It signifies not only that desire and expectation which parents generally have about their children, that they will be comforts to them and helpers, though they often prove otherwise; but it signifies also a prospect of something more. Is Christ ours? Is heaven ours? We need better comforters under our toil and sorrow, than the dearest relations and the most promising offspring; may we seek and find comforts in Christ.
Matthew Henry's Whole Bible CommentaryVerses 25-27 Concerning Methuselah observe, 1. The signification of his name, which some think was prophetical, his father Enoch being a prophet. Methuselah signifies, he dies, or there is a dart, or, a sending forth, namely, of the deluge, which came the very year that Methuselah died. If indeed his name was so intended and so explained, it was fair warning to a careless world, a long time before the judgment came. However, this is observable, that the longest liver that ever was carried death in his name, that he might be reminded of its coming surely, though it came slowly. 2. His age: he lived nine hundred and sixty-nine years, the longest we read of that ever any man lived on earth; and yet he died. The longest liver must die at last. Neither youth nor age will discharge from that war, for that is the end of all men: none can challenge life by long prescription, nor make that a plea against the arrests of death. It is commonly supposed that Methuselah died a little before the flood; the Jewish writers say, "seven days before," referring to ch. 7:10, and that he was taken away from the evil to come, which goes upon this presumption, which is generally received, that all the patriarchs mentioned in this chapter were holy good men. I am loth to offer any surmise to the contrary; and yet I see not that this can be any more inferred from their enrollment here among the ancestors of Christ than that all those kings of Judah were so whose names are recorded in his genealogy, many of whom, we are sure, were much otherwise: and, if this be questioned, it may be suggested as probable that Methuselah was himself drowned with the rest of the world; for it is certain that he died that year. | 
