I. That their chief cities should be surprised and taken in a night by the enemy, probably because the inhabitants, as the men of Laish, indulged themselves in ease and luxury, and dwelt securely (v. 1): Therefore there shall be great grief, because in the night Air of Moab is laid waste and Kir of Moab, the two principal cities of that kingdom. In the night that they were taken, or sacked, Moab was cut off. The seizing of them laid the whole country open, and made all the wealth of it an easy prey to the victorious army. Note, 1. Great changes and very dismal ones may be made in a very little time. Here are two cities lost in a night, though that is the time of quietness. Let us therefore lie down as those that know not what a night may bring forth. 2. As the country feeds the cities, so the cities protect the country, and neither can say to the other, I have no need of thee.