The pairing with Parashah Vayikra, whose opening chapters set out in careful detail the different kinds of offerings, burnt offerings, grain offerings, peace offerings, sin offerings, and how each must be brought, rests on a deliberately ironic contrast: the parashah establishes the sacrificial system in full, meticulous procedural detail, while the haftarah opens by rebuking Israel for failing to bring these very offerings at all.
That irony is the point of the pairing rather than an accident of the lectionary calendar: reading the detailed instructions for offerings immediately alongside a prophecy condemning their neglect forces the two texts into direct tension with one another, the law given in careful abundance in one reading answered by its own non observance in the other.
The haftarah's mockery of idol worship, someone using part of a log to bake bread and the rest to carve an object of worship, also stands as an implicit contrast with the parashah's own careful specification of exactly which animals and grains are acceptable and how they must be prepared, one text insisting on precise, meaningful ritual and the other exposing a worship built on no meaningful distinction at all between fuel and deity.