John Gill Bible Commentary
And Noah was five hundred years old,.... Or "the son of five hundred years" (f); he was in his five hundredth year: it can hardly be thought that he should live to this time a single life, and have no children born to him, which he might have had, but were dead; though some think it was so ordered by Providence, that he should not begin to procreate children until of this age, because it being the will of God to save him and his family from the flood, had he began at the usual age he might have had more than could conveniently be provided for in the ark; or some of them might have proved wicked, and so would deserve to perish with others:
and Noah begat Shem, Ham, and Japheth; not together, but one after another; and since Ham was the younger son, see Gen 9:24 and Shem was an hundred years old two years after the flood, Gen 11:10 he must be born in the five hundred and second year of his father's age; so that it seems most probable that Japheth was the eldest son, and born in the five hundred and first year of his age; though Shem is usually mentioned first, because of his superior dignity and excellency, God being in an eminent manner the God of Shem, Gen 9:26 and from whom the Messiah was to spring, and in whose line the church of God was to be continued in future ages. The name of Japheth is retained in Greek and Latin authors, as Hesiod (g) Horace (h), and others (i), by whom he is called Japetos and Japetus.
(f) "filius quingentorum annorum", Pagninus, Montanus, &c. (g) "Theogonia prope principium et passim". (h) Carmin. l. 1. Ode 3. (i) Apollodorus de Deorum Orig. l. 1. p. 2, 4. Ovid. Metamorph. l. 1. Fab. 2.
Next: Genesis Chapter 6
Matthew Henry Bible Commentary
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 Gen 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.