This is corroborated still further by the fact that in the eighth generation, while the Hebrew books assign 182[172] years to Methuselah before Lamech's birth, ours assign to him twenty less, though usually 100 years are added to this period; then, after Lamech's birth, the twenty years are restored, so as to equalize the total in the two books. For if his design was that these 170 years be understood as seventeen, so as to suit the age of puberty, as there was no need for him adding anything, so there was none for his subtracting anything; for in this case he found an age fit for the generation of children, for the sake of which he was in the habit of adding those 100 years in cases where he did not find the age already sufficient. This difference of twenty years we might, indeed, have supposed had happened accidentally, had he not taken care to restore them afterwards as he had deducted them from the period before, so that there might be no deficiency in the total. Or are we perhaps to suppose that there was the still more astute design of concealing the deliberate and uniform addition of 100 years to the first period and their deduction from the subsequent period,--did he design to conceal this by doing something similar, that is to say, adding and deducting, not indeed a century, but some years, even in a case in which there was no need for his doing so? But whatever may be thought of this, whether it be believed that he did so or not, whether, in fine, it be so or not, I would have no manner of doubt that when any diversity is found in the books, since both cannot be true to fact, we do well to believe in preference that language out of which the translation was made into another by translators. For there are three Greek MSS., one Latin, and one Syriac, which agree with one another, and in all of these Methuselah is said to have died six years before the deluge. 14. _That the years in those ancient times were of the same length as our own._