Shared ground
This report presents Israel’s victory over Sihon as both a real military event and a theologically interpreted event: Israel fights, but the outcome is credited to Yahweh’s action (“Yahweh our God delivered him up”). The story also draws a sharp contrast between Israel’s ability to take fortified places (“not a city too high”) and Israel’s choice to stop at a boundary they believe Yahweh set.
The passage makes two things explicit side by side: (1) the conquest of Sihon’s towns is described as total destruction of inhabited cities, including noncombatants; (2) livestock and material goods are kept as spoil. The narrator also uses repeated “all” language to stress the completeness of both victory and scope.
Where interpretation differs
Some readers take “utterly destroyed every inhabited city” as straightforward description of what occurred in this specific campaign; others think the wording may be a conventional victory style meant to communicate decisive defeat, without requiring that every last person literally died.
Some also differ on how to read the limits in v.37. One view treats the Ammon boundary as a concrete geographic restriction only (don’t cross into that territory). Another view hears a broader principle: even in warfare Israel is constrained by “wherever Yahweh…forbade,” which could extend beyond Ammon to any divinely set limit.
Why the disagreement exists
The passage uses sweeping, emphatic terms (“all,” “none remaining,” “not a city too high”) that can function either as literal totals or as strong rhetorical summaries. At the same time, it provides specific boundary markers (Arnon, Jabbok, Gilead) that sound like careful geography, pushing some readers toward a more literal reading overall.
What this passage clearly contributes
It links military success to Yahweh’s agency while still describing human combat and capture of cities. It portrays conquest as having both expansion (taking Sihon’s land) and restraint (not approaching Ammon). It also shows the narrative’s moral and theological tension plainly rather than hiding it: total destruction is stated directly, and yet it is framed within claimed divine authorization and divinely enforced limits (cf. Deuteronomy 2:37).