The chapter opens by saying a song will be sung in the land of Judah on that day: we have a strong city, and God sets up salvation as walls and ramparts. The gates are to be opened so the righteous nation that keeps faith may enter. God keeps in perfect peace the one whose mind is stayed on him, because he trusts in him, and people are urged to trust in the Lord forever, for he is the eternal Rock.
The Lord brings low those who dwell on high and lays the lofty city in the dust, where the feet of the poor and needy trample it. The path of the righteous is level, and the people wait for the revelation of his name, longing for God with their souls by night and seeking him early. When the Lord's judgments come to the earth, the inhabitants learn righteousness, but the wicked, even when shown favor, do not learn and do not see the majesty of the Lord.
The second part acknowledges that other lords ruled over them, yet only the Lord's name is theirs. Those lords' dead will not live. The people confess their pain: they gave birth to wind and brought no salvation to the earth. Then the promise comes: the Lord's dead shall live, their bodies shall rise, and those who dwell in the dust shall awake and sing, for his dew is a dew of light. The chapter closes with the invitation to take shelter in the chambers for a little while, until the indignation has passed, because the Lord will come out of his place to punish wickedness.