Shared ground
This scene explains the meaning of an earlier failure to move the ark: the problem was not treated as bad luck but as a breakdown in handling a holy task. David gathers top priests and Levite leaders, identifies them as responsible heads, and frames the earlier harm as connected to doing the job the wrong way (vv. 11–13).
The correction is both personnel and procedure. The ark is to be carried by Levites, and it is to be handled in the way already laid down “as Moses commanded according to the word of Yahweh” (v. 15). The narrative emphasizes preparation (“sanctify yourselves”) before action (vv. 12, 14).
Where interpretation differs
The main uncertainty is what exactly counts as “seek him according to the ordinance” (v. 13). Some read this as mainly about the transport rules for the ark (who carries it, how it is carried). Others think it includes a wider idea: approaching Yahweh properly in worship, with required preparation and respect, not just correct technique.
A smaller question is who is being blamed when David says, “you didn’t carry it at the first” (v. 13). It can be heard as aimed at the Levite leadership specifically (since they are being addressed), or as a broader “you/we” statement about collective responsibility for how the whole project was run.
Why the disagreement exists
The passage gives two reasons side-by-side (“you didn’t carry it” and “we didn’t seek him according to the ordinance”) without fully spelling out the ordinance’s contents. It also mixes “you” and “we,” which can make the target of responsibility sound either narrow (Levites) or shared (the leadership and people together).
What this passage clearly contributes
Explicitly, the text links Yahweh’s “breach” (a sudden outbreak of harm) with failing to follow the required way of approaching the task (v. 13). It also presents the successful second attempt as grounded in (1) the right group doing the carrying (Levites), (2) set-apart preparation by priests and Levites, and (3) conformity to Moses’ command and Yahweh’s word (vv. 14–15).