C. F. Keil and Franz Delitzsch on Isaiah 13:14

Isa 13:14 “And it comes to pass as with a gazelle which is scared, and as with a flock without gatherers: they turn every one to his people, and they flee every one to his land.” The neuter v'hâyâh affirms that it will then be as described in the simile and the interpretation which follows. Babylon was the market for the world in central Asia, and therefore a rendezvous for the most diverse nations (Jer 50:16, cf., Isa 51:9, 44) - for a πάμμικτος ὄχλος, as Aeschylus says in his Persae, v. 52. This great and motley mass of foreigners would now be scattered in the wildest flight, on the fall of the imperial city. The second disaster is violent death.