John Gill Commentary Jeremiah 48:18

"O thou daughter that dwellest in Dibon, come down from thy glory, and sit in thirst; for the destroyer of Moab is come up against thee, he hath destroyed thy strongholds." — Jeremiah 48:18 (ASV)

You daughter that do inhabit Dibon: A city in Moab; (See Gill on Isaiah 15:2). The Targum is, ``O kingdom of the congregation of Dibon;'' but this was not a kingdom of itself, though a principal city in the kingdom of Moab.

Come down from [your] glory, and sit in thirst: in a dry and thirsty land; in want of all the necessaries of life; in captivity; who before abounded with all good things, inhabiting a well watered and fruitful soil; see (Isaiah 15:9) ; but now called to quit all their former glory and happiness, their fulness and felicity, and submit to the greatest straits and difficulties.

For the spoiler of Moab shall come upon you, [and] he shall destroy your strong holds: the king of Babylon and his army, who spoiled the other cities of Moab; he should come against this also, and take it, and demolish its fortifications, by reason of which it thought itself secure; but these should not be able to protect it.