Job 42:16

“After this lived Job an hundred and forty years, etc.] Not after he had arrived to the height of his prosperity; not after the birth of his children, and they were grown up, and had their portions given them, which must take in a considerable number of years; but after his afflictions were over, and his prosperity began: and if his years were doubled, as some think, though that is not certain, then he must be seventy years of age when he was so sorely afflicted and must live to the age of two hundred and ten; which is the common notion of the Jewish writers f1607: however, he must be fifty or sixty years of age at that time, since his former children were grown up and were for themselves;…”

“The Septuagint makes Job live a hundred seventy years after his calamity, and two hundred forty in all. This would make him seventy at the time of his calamity, which added to a hundred forty in Hebrew text makes up two hundred ten; a little more than the age (two hundred five) of Terah, father of Abraham, perhaps his contemporary. Man's length of life gradually shortened, till it reached threescore and ten in Moses' time (Psa 90:10). sons' sons--a proof of divine favor (Gen 50:23; Psa 128:6; Pro 17:6).”

“After this Job lived an hundred and forty years - As his age at the time his calamities commenced is not mentioned, it is of course impossible to determine how old he was when he died. The Septuagint, however, has undertaken to determine this, but on what authority is unknown. They render this verse, “And Job lived after this affliction an hundred and seventy years: so that all the years that he lived were two hundred and forty.” According to this, his age would have been seventy when his afflictions came upon him; but this is a mere conjecture. Why the authors of that version have added thirty years to the time which he lived after his calamities, making it an hundred and seventy instead of…”

“After this, &c. - Some conjecture, that he was seventy when his trouble came. If so his age was doubled, as his other possessions. Job 42:17”

“42:16 140 years was twice the normal life span (Ps 90:10). If the analogy of double restoration holds (Job 42:10), Job might have been 70 already and then lived another 140 years. A life span of 210 years would not be out of keeping with the patriarchal setting of the book (see Gen 25:7; 35:28; 47:28; 50:26; Deut 34:7; Josh 24:29). • living to see four generations of his children and grandchildren: Job’s blessing extended to watching his multigenerational family grow (Gen 50:23; Ps 128:6).”

“After: How long he had lived before his afflictions we cannot tell: if we could rely upon the LXX, all would be plain, which adds here, τα δε παντα ετη εζησεν διακοσια τεσσαρακοντα. "And all the years he lived were two hundred and forty." an: Gen 11:32, Gen 25:7, Gen 35:28, Gen 47:28, Gen 50:26; Deu 34:7; Jos 24:29; Psa 90:10 and saw: Gen 50:23; Psa 128:6; Pro 17:6 Job 42:17”

“16 And Job lived after this a hundred and forty years, and saw his children and his children's children to four generations. In place of ויּרא, the Keri gives the unusual Aorist form ויּראה, which, however, does also occur elsewhere (e.g., Sa1 17:42). The style of the primeval histories, which we here everywhere recognise, Gen 50:23 (comp. Isa 53:10), is retained to the last words. Job 42:17”