(5) Rabbah was the only important town belonging to the Ammonites. It has become literally a stable for the camels of the wandering Bedouins. In the parallel clause the "Ammonites" are put for the land which they inhabit.

25:1-7. It is wicked to be glad at the calamities of any, especially of God's people; it is a sin for which he will surely reckon. God will make it appear that he is the God of Israel, though he suffers them for a time to be captives in Babylon. It is better to know Him, and to be poor, than to be rich and ignorant of him.And I will make Rabbath a stable for camels,.... Creatures much used by the eastern nations, especially the Arabians; who pitching their tents about Rabbath, the royal city, the metropolis of the children of Ammon, would convert the houses, and even palaces in it, into stables for their camels. This city, in Jerom's time, as he says, was called Philadelphia, from Ptolemy Philadelphus, who rebuilt it.

And the Ammonites a couching place for flocks; that is, the land of the Ammonites should be made a place for flocks of sheep to lie down in, which the Arabians would bring and feed upon it:

and ye shall know that I am the Lord; omniscient, and sees and observes all your insults upon the children of Israel and Judah; and omnipotent, able to perform all that is threatened; and immutable, bringing about all that is here prophesied of.