Albert Barnes Commentary Jeremiah 49:3

"Wail, O Heshbon, for Ai is laid waste; cry, ye daughters of Rabbah, gird you with sackcloth: lament, and run to and fro among the fences; for Malcam shall go into captivity, his priests and his princes together." — Jeremiah 49:3 (ASV)

Ai - Not the town on the west of the Jordan (Joshua 7:2); a place not mentioned elsewhere. For Ai some read Ar.

Hedges - Fields were not divided by hedges until recent times; the term probably means the walls which enclose the vineyards (Numbers 22:24).