Their horses also are swifter than the leopards, and are more fierce than the evening wolves: and their horsemen shall spread themselves, and their horsemen shall come from far; they shall fly as the eagle that hasteth to eat. Their horses also are swifter than the leopards - The Chaldean cavalry are proverbial for swiftness, courage, etc. In Jeremiah, Jeremiah 4:13, it is said, speaking of Nebuchadnezzar, "His chariots are as a whirlwind; his horses are swifter than eagles."
Oppian, speaking of the horses bred about the Euphrates, says, "They are by nature warhorses, and so intrepid that neither the sight nor the roaring of the lion appals them; and, besides, they are astonishingly fleet." The leopard, of all quadrupeds, is allowed to be the swiftest.
The evening wolves - The wolf is remarkable for his quick sight. Aelian says, Οξυωτεστατον εστι ζωον, και μεντοι, και νυκτος και σεληνης ουκ ουσης ὁδε ὁρᾳ; "The wolf is a very fleet animal; and, besides, it can see by night, even when there is no moonlight." Some think the hyena is meant: it is a swift, cruel, and untameable animal. The other prophets speak of the Chaldeans in the same way. See Deuteronomy 28:49; Jeremiah 48:40; Jeremiah 49:22; Ezekiel 17:5; Lamentations 4:19.