This haftarah opens with Isaiah addressing Zion as a woman who has been barren and without children, told to sing anyway, since her offspring will one day outnumber those of a woman who never suffered that loss, an image of restoration promised before it has visibly arrived. The passage then makes an explicit historical comparison: just as God swore that the waters of Noah would never again flood the earth, so God now swears not to be angry with this people or rebuke them again, tying the promise of restoration directly to the flood covenant's own permanence.
Isaiah goes on to describe a future Jerusalem rebuilt with precious stones for its foundations and walls, its children taught directly by God, established in righteousness and far from oppression or fear. The chapter closes affirming that no weapon formed against this people will succeed, and that this security is itself the heritage of God's servants.
The haftarah then opens Isaiah 55 with an invitation extended to everyone who thirsts to come to the water, and to those without money to come and buy food and drink without cost, urging attention to the everlasting covenant promised through David.
The invitation that closes this haftarah, extended to everyone regardless of means, mirrors the flood covenant's own universal scope: just as the promise never to flood the earth again was made to all humanity rather than to Israel alone, the offer of water and food without cost is addressed broadly rather than narrowly.