The LORD has opened his armory and brought out the weapons of his wrath, for the Lord GOD of hosts has a work to do in the land of the Chaldeans.
The Prophet here expresses more clearly what he bad touched upon, even that this war would not be that of the Persians, but of God himself. He then says, that God had opened his treasure, even because he has various and manifold ways and means, which cannot be comprehended by men, when he resolves to destroy the ungodly.
Here, 1. The forces are mustered and commissioned to destroy Babylon, and every thing is got ready for a descent upon that potent kingdom: Go up against that land by Merathaim, the country of the Mardi, that lay part in Assyria and part in Armenia; and go among the inhabitants of Pekod, another country (mentioned Eze 23:23) which Cyrus took in his way to Babylon.
Commenting on Jeremiah 50:21-32
The Lord hath opened his armoury,.... Alluding to the manner of kings, who have some particular edifice built for an armoury; see Sol 4:4; wherein are provided and laid up all sorts of armour, small and great, which are fetched out from thence, in time of need.