Albert Barnes Commentary Jeremiah 48:28

"O ye inhabitants of Moab, leave the cities, and dwell in the rock; and be like the dove that maketh her nest over the mouth of the abyss." — Jeremiah 48:28 (ASV)

Dwell in the rock - See Jeremiah 4:29. The sole chance of escape is refuge in inaccessible fastnesses.

In the sides ... - On the further side of the mouth of the pit. The wild rock pigeon invariably selects deep ravines for its nesting and roosting.