John Gills Exposition of the Bible Commentary - Genesis 5:5
And all the days that Adam lived were nine hundred and thirty years ,.... Not lunar years, as Varro F4 Apud Lactant. Institut. l. 2. c. 13. , but solar years, which consisted of three hundred and sixty five days and odd hours, and such were in use among the Egyptians in the times of Moses; and of these must be the age of Adam, and of his posterity in this chapter, and of other patriarchs in this book; or otherwise, some must be said to beget children at an age unfit for it,... read more
John Gills Exposition of the Bible Commentary - Genesis 5:4
And the days of Adam, after he had begotten Seth, were eight hundred years ,.... The Septuagint version is seven hundred; for having added one hundred years more the should be, to the years of his life before the birth of Seth, here they are taken away to make the number of his years complete: and he begat sons and daughters ; not only after the birth of Seth, but before, though we have no account of any, unless of Cain's wife; but what their number was is not certain, either before or... read more