'Mahalalel' in the Bible

And Kenan was seventy years old when he became the father of Mahalalel:

And after the birth of Mahalalel, Kenan went on living for eight hundred and forty years, and had sons and daughters:

And Mahalalel was sixty-five years old when he became the father of Jared:

And after the birth of Jared, Mahalalel went on living for eight hundred and thirty years, and had sons and daughters: