Genesis 46:27

And the sons of Joseph , who were born to him in Egypt , were two . All the persons of the house of Jacob who came into Egypt were seventy .

With the two sons who had been born to Joseph in Egypt, the members of Jacob`s family, which went to Egypt, were seventy in all.

And the sons of Joseph, which were born him in Egypt, were two souls : all the souls of the house of Jacob, which came into Egypt, were threescore and ten.