This haftarah opens with God stating that this people was formed specifically to declare His praise, before turning to a pointed rebuke: Israel has not brought the required sheep for burnt offerings, has not honored God with sacrifices, and yet has burdened Him with its sins and wearied Him with its iniquities, a sharp reversal of expectation given the sacrificial system's central place in the nation's worship.
Isaiah then offers reassurance that God blots out these transgressions for His own sake and will not remember the people's sins, before mocking at length those who fashion idols from wood, using part of a tree to warm themselves or bake bread and the remainder to carve a god they then bow down to, unable to recognize the absurdity of worshipping something they themselves shaped with their own hands from the same material used for fuel.
The haftarah closes with reassurance to Jacob, God's servant, formed from the womb and not to be forgotten, and a call for the heavens and the depths of the earth to sing, since God has redeemed Jacob and will be glorified in Israel, closing a passage that opened in rebuke on a note of restored praise.
The mockery of idols fashioned from the same wood used for ordinary fuel gives this haftarah one of its more memorable images, a deliberately absurd picture meant to strip away any dignity the practice might otherwise seem to carry among those who still engage in it.