Now there is a turn, as this author speaks directly to Jerusalem instead of Jerusalem herself complaining. Jerusalem was encouraged to be courageous. She would be comforted. However, those who mistreated her and rejoiced at her fall will be miserable. The cities where the children of Jerusalem served as slaves would be miserable also. The city of Babylon, that received the children of Jerusalem, rejoiced and was glad at the downfall and ruin of Jerusalem. Now they will be grieved at their own desolation. The pride of those people and their insolence will be turned to grief. The Everlasting One, not Yahweh, will bring fire upon it for many days. For a long time it will be inhabited by demons.
Yahweh, via Jeremiah, wants them to leave their towns and go live in the rocks and gorges. They should be like doves with their nests on the sides of mountains. The Moabites were very proud and arrogant, much like in Isaiah, chapter 16. They were, in fact, proud of their loftiness and haughtiness of heart. Yahweh personally knew about their insolence. They had both false boasts and false deeds.