The pairing with Parashah Bamidbar, whose opening chapters record a detailed census of each tribe by exact number in preparation for the wilderness march, rests on a deliberate contrast this account has already noted in a similar form elsewhere: the parashah gives Israel a precise, countable population, tribe by tribe, while the haftarah opens by promising that Israel's descendants will eventually be like the sand of the sea, explicitly beyond measurement or number, a future so abundant it exceeds the very kind of counting the parashah performs in careful, exact detail.
Both texts are also set against the same physical backdrop, the wilderness, the parashah recording the nation's literal encampment and organization there, and the haftarah describing God alluring Israel into the wilderness once more, this time not as a place of hardship to be endured but as the setting for a renewed, tender courtship between God and the nation.
That shared setting gives the pairing its emotional logic: the wilderness the parashah organizes with careful administrative structure becomes, in the haftarah, the very place where a broken relationship is imagined being restored, the same location serving as backdrop first for a nation being counted and ordered, and later for that same nation being wooed back into faithfulness.