'Seventy Years' in the Bible

And Cainan lived seventy years, and begat Mahalaleel:

And all the days of Lamech shall be seven and seventy years and seven hundred years, and he shall die.

And Terah lived seventy years, and begat Abram, Nahor, and Haran.

And Abram goeth on, as Jehovah hath spoken unto him, and Lot goeth with him, and Abram is a son of five and seventy years in his going out from Charan.

And these the days of the years of the life of Abraham which he lived, a hundred years and seventy years and five years.