This haftarah opens addressing a city described as afflicted and storm tossed, without comfort, promising to set its foundation stones with sapphires and build its whole structure with precious materials, its children taught directly by God and living in great peace, established in righteousness and far removed from oppression or fear.
Isaiah declares that no weapon formed against this city will succeed and no accuser brought against it will prevail, framing this security as the heritage of God's servants specifically, a vindication that belongs to them by right rather than by chance.
The haftarah closes opening Isaiah 55 with an invitation extended to everyone who thirsts to come to the water, and to those without money to come and receive food and drink freely, urging attention to an everlasting covenant tied to the loving devotion promised through David, and closing with a call to summon a nation that does not yet know Israel, since God has glorified this people and they in turn will glorify the God of Israel before the wider world.
The promise that no weapon formed against this city will succeed has taken on a long afterlife well beyond its original context, quoted frequently in later devotional and liturgical settings as a general statement of protection rather than only as a description tied to this one specific vision of a rebuilt Jerusalem.