The waters of Dimon are full of blood, but I will bring more upon Dimon—a lion upon the fugitives of Moab and upon the remnant of the land.
9. For the waters of Dimon shall be filled with blood. {Bogus footnote} Here he describes not only grief and howling, flight or trembling, or the covetousness of enemies in plundering their wealth, but the slaughter of men. How great must this have been, when large and magnificent rivers, such as Dimon was, are filled with blood! For I will lay upon Dimon additions.
Here the prophet further describes the woeful and piteous lamentations that should be heard throughout all the country of Moab when it should become a prey to the Assyrian army. "By this time the cry has gone round about all the borders of Moab," Isa 15:8. Every corner of the country has received the alarm, and is in the utmost confusion upon it.
Commenting on Isaiah 15:6-9
For the waters of Dimon shall be full of blood,.... Of the slain, as the Targum adds. This was a river in the land of Moab, as say Jarchi and Kimchi; it had its name from the blood of the slain, Some take it to be the name of a city, and the same with Dibon, Isa 15:2 but, because of the abundance of blood...