In a moment in one day. The day of the capture of the city by Cyrus, which was the third of Marchesvan, b.c. 539. Then, "in a moment," Babylon lost the whole of her prestige, ceased to reign, ceased to be an independent power, became a "widow," had a portion of her population turn from her, was brought down to the dust.
Loss of children, and widowhood came upon her in their perfection; i.e. "in the full extent of their bitterness" (Cheyne). Not that Cyrus imitated her common practice by carrying off her entire population; on the contrary, she continued for more than two centuries to be a flourishing and populous town.
Twice she revolted from Darius Hystaspis ('Beh. Ins.,' col. 1. par. 16; col 3, par. 13), once, perhaps, from Xerxes (Ctes; 'Ext. Pers,' § 22). Alexander the Great found her walls and her great buildings in ruins, but still she was a considerable place.
Cyrus, however, no doubt, carried off a portion of her population, which thenceforth begun to dwindle, and continually became less and less as time went on, until she sank into a solitude. That extreme desolation which the prophets paint in such vivid colours (Isaiah 12:1-6:19-22; Isaiah 14:22, Isaiah 14:23; Jeremiah 50:10:15, 38-40; Jeremiah 2:36 -43) was potentially contained in the capture by Cyrus, which was the work of a single day.
For the multitude of thy sorceries … of thine enchantments (comp. Isaiah 47:13; and see also Daniel 2:2; Daniel 5:7). The word here translated "sorceries" probably means "incantations" or "enchantments," while that translated "enchantments" means "spells."
The addiction of the Babylonians to marc is largely attested by the classical writers, and has been proved beyond a doubt by the lately discovered native remains.