Shared ground
These closing lines of the poem keep two realities together: Jerusalem’s suffering is widely known, yet she remains uncomforted, and her enemies respond to her pain with happiness rather than pity. The speaker also directly credits the LORD with the disaster (“you have done it”), not treating the fall as a random event.
The final move is a plea for reversal. The speaker asks the LORD to bring an “announced day” when the enemies will become “like me,” and for their wrongdoing to be brought before God for matching treatment. The request is framed as a response to real injustice (enemy gloating) while also acknowledging Jerusalem’s own “transgressions” as part of why she has suffered.
Where interpretation differs
Some readers take “you have done it” as the LORD’s direct action in judgment; others understand it as the LORD allowing the catastrophe through Babylon and other forces. Either way, the text presents God as ultimately responsible at the level of governance.
“The day you have proclaimed” is also read in more than one way. It may refer to a near-term, historical reckoning on local and regional enemies, or it may point beyond the immediate crisis to a broader horizon of divine justice.
Why the disagreement exists
The poem is specific about grief, enemy gloating, and appeal to the LORD, but it is not specific about which enemies are in view or how the proclaimed “day” relates to particular events. The poetry compresses time and agency (“you have done it”) in a way that can be stated truly in more than one explanatory model.
What this passage clearly contributes
Explicitly, the passage contributes a portrait of suffering that is public (“they have heard”), isolating (“none to comfort”), and aggravated by others’ joy. It also insists that lament can name God’s involvement without denying human wrongdoing: Jerusalem mentions both God’s action and her own transgressions.
Theologically (by inference from the explicit claims), the passage models a view of justice where evil is not ignored: wrongdoing is asked to “come before” God, and the speaker expects God to act in history and not only as a private comfort. It also shows the moral complexity of a community that can confess guilt while still asking God to address the cruelty and wrongdoing of its enemies.