Shared ground
These verses present Jerusalem’s fall as the Lord’s deliberate act, not an accident of politics. The text explicitly stacks four disasters—war (“sword”), famine, dangerous animals, and disease—as a combined set of “severe judgments” aimed at cutting off people and animals (v. 21).
At the same time, the passage explicitly insists on survivors: a “remnant,” including “sons and daughters,” who will be brought out to the audience (v. 22). Their lives are observable: people will “see their way and their doings” (vv. 22–23). That visible conduct becomes confirming proof that what happened to Jerusalem had a real moral cause (“not done without cause,” v. 23).
Where interpretation differs
1) What “you will be comforted” means. Some read “comforted” mainly as emotional relief: the audience’s distress over Jerusalem’s disaster is eased when survivors arrive and the situation becomes clearer. Others read it mainly as moral clarity: the observers are steadied because the remnant’s behavior demonstrates that the judgment was warranted.
2) How the remnant’s conduct functions as proof. Some understand the remnant’s “ways and deeds” as evidence of Jerusalem’s corruption—survivors show the same kind of behavior that brought judgment, proving the disaster was deserved. Others think the emphasis is broader: their conduct (whether bad, sobering, or simply revealing) makes the Lord’s stated purpose intelligible to the observers, so the event is no longer seen as random.
Why the disagreement exists
The text ties “comfort” directly to seeing the remnant’s conduct, but it does not spell out whether that conduct is mainly exemplary, mainly corrupt, or mainly informative. Also, “comforted” can cover both emotional settling and the kind of reassurance that comes from understanding why something happened.
What this passage clearly contributes
The passage contributes a tight link between judgment and explanation: Jerusalem’s collapse is framed as purposeful and justified (“not without cause”), and the remnant is part of how that justification becomes publicly knowable. The remnant is not presented here as canceling judgment; rather, their survival and visibility function as confirming proof that the Lord’s actions against Jerusalem had a real basis and a stated aim.