Genesis 5:12

12 Kenan lived seventy years, and became the father of Mahalalel.

Genesis 5:12 Meaning and Commentary

Genesis 5:12

And Cainan lived seventy years, and begat Mahalaleel.
] Here the Septuagint version adds an hundred years, as before.

Taken from John Gill's Exposition of the Bible

10 Then Enosh lived eight hundred and fifteen years after he became the father of Kenan, and he had other sons and daughters.

11 So all the days of Enosh were nine hundred and five years, and he died.

12 Kenan lived seventy years, and became the father of Mahalalel.

13 Then Kenan lived eight hundred and forty years after he became the father of Mahalalel, and he had other sons and daughters.

14 So all the days of Kenan were nine hundred and ten years, and he died.