Charles Ellicott Commentary Ezekiel 25:9

"therefore, behold, I will open the side of Moab from the cities, from his cities which are on his frontiers, the glory of the country, Beth-jeshimoth, Baal-meon, and Kiriathaim," — Ezekiel 25:9 (ASV)

Open the side of Moab — that is, lay it open to the enemy. This is to be done from the cities, on which a special emphasis is placed. The cities named were all on the north of the Arnon, and before the time of Moses had been seized from the Moabites by the Amorites, from whom, in turn, they were taken by the Israelites, and long formed a part of their territory. In the decline of the power of Israel, they were reconquered by Moab and are spoken of here, perhaps considering they were rightfully a possession of Israel, as the appropriate point from which desolation should spread over all of Moab.

The glory of the country — The territory designated by the mention of these three cities is still considered by the Arabs as the best part of the land and is called Belka. They have a proverb, “You can find no land like Belka.” The sites of all the cities mentioned here have probably been identified by existing ruins.