Shared ground
Exodus starts by reconnecting the reader to the earlier story of Jacob’s family moving to Egypt. The text’s explicit focus is on who entered Egypt: the sons of Israel (Jacob), named one by one, and described as coming as family units (“each man and his household”) with Jacob as the central figure.
Another clear contribution is the baseline number: the descendants “from Jacob’s body” who came are counted as seventy, while Joseph’s situation is singled out as different—he was already in Egypt. This opening snapshot sets up the later story by showing Israel beginning in Egypt as a known, countable family group rather than an anonymous crowd.
Where interpretation differs (only where needed)
Two main questions come up.
First, when the text says “seventy” who came, readers ask whether that total is meant to include Joseph (and possibly Joseph’s household) even though he did not “come” with the others, or whether the seventy refers to the migrant group connected with Jacob’s move while Joseph is mentioned separately to clarify why he is not part of the traveling group.
Second, “from Jacob’s body” raises the question of counting. Some read it as a strict biological-descendant count, while others see it as a family-line way of speaking that can still include members of the household connected to Jacob’s line (especially when compared with similar lists elsewhere).
Why the disagreement exists
The wording combines two ideas that can pull in different directions: it speaks of people who “came” into Egypt, but then immediately notes Joseph was already there. Also, “souls” can mean persons in general, while “from Jacob’s body” sounds more narrowly tied to physical descent. Those tensions create more than one reasonable way to total the seventy.
What this passage clearly contributes
It establishes identity (the founding names), social structure (households/clans, not isolated individuals), and scale (a starting population figure) for Israel’s life in Egypt. It also reinforces continuity with Genesis by echoing the earlier family-migration account (Genesis 46:8–27), preparing the reader for the shift from family story to people-group story in Exodus.