Genesis 46:27; Exodus 1:5; Acts 7:14

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

All the descendants of Jacob were bseventy persons; Joseph was already in Egypt.

14 And mJoseph sent and summoned Jacob his father and all his kindred, nseventy-five persons in all.