'Seventy' in the Bible

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

Terah lived seventy years, and became the father of Abram, Nahor and Haran.

and the sons of Joseph, who were born to him in Egypt were two; all the persons of the house of Jacob, who came to Egypt, were seventy.

Now forty days were required for it, for such is the period required for embalming. And the Egyptians wept for him seventy days.