'Seventy' in the Bible

If Cain shall be avenged sevenfold, truly Lamech seventy and sevenfold.

And Cainan lived seventy years, and begat Mahalaleel:

And all the days of Lamech were seven hundred seventy and seven years: and he died.

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

So Abram departed, as the LORD had spoken unto him; and Lot went with him: and Abram was seventy and five years old when he departed out of Haran.

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

And the sons of Joseph who have been born to him in Egypt are two persons. All the persons of the house of Jacob who are coming into Egypt are seventy.

and they fulfil for him forty days, for so they fulfil the days of the embalmed, and the Egyptians weep for him seventy days.