This unit sits inside the larger travel-and-family list of Jacob’s household as they move toward Egypt (Genesis 46). The chapter interweaves movement with a careful accounting of descendants, naming sons, sometimes daughters, and occasionally grandsons, and then adding subtotals. Verses 16–18 belong to the segment that organizes Jacob’s descendants by mothers: here, Zilpah’s line (connected to Leah’s household) is recorded after other branches and before the list continues to additional family lines. The logic is simple: list names, note notable relationships, then state the total for that branch.