By a grand figure the prophet describes Yahweh arming Himself that in person He may execute justice upon the wicked city.
For this is the work - Rather, for my Lord Yahweh of hosts hath a work to do in the land of the Chaldaeans.
Related Commentaries of Jeremiah 50:25
Jeremiah 50:25
25 The LORD hath opened his armoury, and hath brought forth the weapons of his indignation: for this is the work of the Lord GOD of hosts in the land of the Chaldeans.