Matthew Poole and continuators on Jeremiah 48:28

28 O ye that dwell in Moab, leave the cities, and dwell in the rock , and be like the dove that maketh her nests in the sides of the holes mouth .

Still the Prophet speaks of the Moabites, as a people whose Armies were routed and calls to them to leave their houses in Cities, not promising themselves any security, either to or from their houses, or from the Walls of their Cities, but to get them to Rocks, which are naturally fortified and from whence (if from any place) security might be promised.

And he commends to them the natural sagacity of a Dove, which being a feeble Creature, and not able to incounter an Hawk or Eagle, makes her self a nest in the sides of some rock where she may be at safety.