Albert Barnes Commentary Jeremiah 49:2

"Therefore, behold, the days come, saith Jehovah, that I will cause an alarm of war to be heard against Rabbah of the children of Ammon; and it shall become a desolate heap, and her daughters shall be burned with fire: then shall Israel possess them that did possess him, saith Jehovah." — Jeremiah 49:2 (ASV)

Rabbah - that is, the “great city.” See (2 Samuel 12:27) note for a distinction between Rabbah, the citadel, and the town itself, lying below upon the Jabbok.

Daughters - that is, unwalled villages .

Shall Israel be heir ... - that is, “shall be victor over his victors;” compare (Micah 1:15).