18. cast them down—that is, predict that they shall be cast down (so Jer 1:10). The prophet's word was God's, and carried with it its own fulfilment.
daughters of … nations—that is, the nations with their peoples. Egypt is to share the fate of other ancient nations once famous, now consigned to oblivion: Elam (Eze 32:24), Meshech, &c. (Eze 32:26), Edom (Eze 32:29), Zidon (Eze 32:30).