3 Let not the archer string his bow, nor let him put on his armor. Do not spare her young men; completely destroya her army.

Read Jeremiah 51:3 Using Other Translations

Against him that bendeth let the archer bend his bow, and against him that lifteth himself up in his brigandine: and spare ye not her young men; destroy ye utterly all her host.
Let not the archer bend his bow, and let him not stand up in his armor. Spare not her young men; devote to destruction all her army.
Don’t let the archers put on their armor or draw their bows. Don’t spare even her best soldiers! Let her army be completely destroyed.