Shared ground
Numbers 26:5–11 starts the second wilderness census by putting Reuben first and calling him Israel’s firstborn. The text is mainly administrative: it names Reuben’s clan branches (through Hanoch, Pallu, Hezron, and Carmi) and then gives a total count (43,730).
But the list pauses to remember a moral and communal crisis. One family line is traced (Pallu → Eliab) so the reader can identify Dathan and Abiram. They are recalled as men who resisted Moses and Aaron in the same revolt associated with Korah, and the passage recalls their dramatic death and the death of others. The note that “the sons of Korah didn’t die” adds a boundary to how far the earlier judgment reached.
Where interpretation differs
Two phrases raise interpretive questions.
First, “called of the congregation” (v. 9). Some take it to mean Dathan and Abiram held recognized standing—public figures, possibly leaders—so their rebellion carried special weight. Others read it more generally: they were “summoned/identified” before the community, meaning they became well-known cases rather than office-holders.
Second, “swallowed them up together with Korah” (v. 10). Some read this as tightly linking Korah’s end to Dathan and Abiram at the same moment and place. Others read it as linking the events as one combined judgment on the same rebellion, without requiring every detail (location, timing, mechanism) to be identical for every participant.
Why the disagreement exists
The passage compresses a larger narrative into a brief reminder inside a census list. Because it summarizes rather than retells the full story, readers have to decide how literally to map the summary onto the earlier rebellion account (and how much the wording implies about status and logistics).
What this passage clearly contributes
Explicitly, the passage contributes (1) Reuben’s internal clan structure for the census, (2) a specific population total for Reuben, and (3) the preservation of community memory: rebellion against Moses and Aaron is presented as striving “against Yahweh,” and the deaths of the rebels (and the 250 men consumed by fire) functioned as a public warning sign. It also makes an explicit clarification that not every member connected to Korah’s line died, which keeps later genealogies and roles intelligible.