The mighty lion Babylon will no longer roar or growl. They will be reduced to young baby lions, whelps. They would get drunk and be merry until they fell into a perpetual sleep. Thus they will never wake up again. They will be like lambs, rams, and goats brought to the slaughter. They would not realize what hit them.
In this battle with Babylon, the Babylonian archers with their bows and arrows would be useless. Those who put on armored coats of mail would also find little protection. The invaders were to utterly destroy the young men and the army of the Babylonians. They were to defeat the Chaldeans in their own streets, even letting the wounded ones lay there.