Shared ground
This paragraph presents David’s first major public act after being recognized as king: he and “all Israel” move against Jerusalem (also called Jebus) and take it (vv. 4–5). The story highlights three linked outcomes: a secured stronghold (“Zion”), a new royal center (“the city of David”), and an organized leadership structure under David (vv. 6–7).
The narrative also gives a theological explanation alongside the political one. David’s increasing strength is reported as a visible fact, and the text states the reason: “Yahweh of Hosts was with him” (v. 9). That line frames the capture and building work as more than strategy; it is success accompanied by divine support.
Where interpretation differs
Two details are described briefly, so readers fill in the picture differently.
First, the Jebusites’ words (“You shall not come in here,” v. 5) can be heard as mockery, a threat, or a confident boast about the city’s defenses. The text only reports the line and then the reversal: David takes the stronghold anyway.
Second, “Millo” (v. 8) is not explained. Some take it as a specific structure (like a terracing or fortification feature), while others treat it more generally as part of the city’s defensive or support system. Either way, the point in the verse is that the city was expanded outward from a key feature and then repaired.
Why the disagreement exists
The account is compact and selective, focused on outcomes rather than mechanics. It names locations and roles (Zion, Millo, Joab’s promotion) without describing how the assault worked or what each construction term precisely refers to.
What this passage clearly contributes
Explicitly, it says David captured a formerly Jebusite-held stronghold, established residence there, and the site became known as the “city of David” (vv. 5, 7). It also explicitly links military success with leadership appointment: Joab becomes chief by being first to strike (v. 6). Finally, it explicitly attributes David’s growing greatness to Yahweh’s presence (v. 9), presenting kingship, security, and city-building under the banner of divine backing rather than human ability alone.