King David initiates a grand plan for a massive national gathering. Having already secured the agreement of the nation's leaders and officers [מצודת דוד, מלבי״ם], he lays out two vital conditions before moving forward. The initiative will only proceed if it is fully embraced by the people and, at the exact same time, aligns perfectly with the will and approval of God [רלב״ג, מלבי״ם, ביאור שטיינזלץ].
To execute this vision, David proposes a sweeping campaign to reach the masses. The primary approach among commentators views this effort as a massive, outward expansion, dispatching countless messengers in every direction to accelerate the arrival of the people [רד״ק, רלב״ג, מלבי״ם, ביאור שטיינזלץ]. A closely related perspective understands this call to action as a charge to proceed with strength and courage [מצודת דוד, מצודת ציון]. Alternatively, a more spiritual interpretation suggests this effort is meant to shatter a long-standing barrier of neglect. For a long time, the people had not sought God, and this sudden burst of outreach is designed to break through that apathy, summoning everyone to honor the Ark of the Covenant [רש״י].
The messengers are tasked with reaching the rest of the nation who remained in their local territories across the land and had not yet joined the gathering [מצודת דוד, ביאור שטיינזלץ]. The goal is to draw an even larger crowd than the one that attended David's coronation [רד״ק]. Additionally, the invitation is extended to the priests and Levites residing in their respective cities, which were uniquely characterized by the open, undeveloped land surrounding them [מצודת דוד]. Ultimately, the entire effort is designed to unite every segment of the nation, alongside their spiritual leaders, into one monumental assembly [ביאור שטיינזלץ].