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.
Isaiah here assumes the first person plural “we,” instead of the first person singular, “I.” Now the tone is not as forgiving. They have heard of the pride, the arrogance, and insolence of Moab. Those Moabites make false boasts. Therefore, let them cry. Let everyone wail away, because they have been decimated. They cry out for their raisin cakes from Kir-hareseth. The raisin cakes were made from the grapes that dried up. These must have been some good bakery cakes from the town of Kir or Kerak in Moab, the probable names for Kir-hareseth.