“It should be noted that where our Codices, translated from the Hebrew source, say Adam lived for one hundred and thirty years and begot Seth, the ancient translation has, instead of one hundred and thirty, two hundred and thirty; where our Codices continue, "And the days of Adam after he begot Seth were eight hundred…”
Bede, 8th c. — Commentary on Genesis (Hexaemeron)
Original
12And Cainan lived seventy years, and begat Mahalaleel:
Modern
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In context
10And Enos lived after he begat Cainan eight hundred and fifteen years, and begat sons and daughters:
11And all the days of Enos were nine hundred and five years: and he died.
— Genesis 5:12 —
13And Cainan lived after he begat Mahalaleel eight hundred and forty years, and begat sons and daughters:
14And all the days of Cainan were nine hundred and ten years: and he died.