Habakkuk 1:6
For behold, I am raising up the Chaldeans, that bitter and hasty nation, which marches through the breadth of the earth, to seize dwellings not their own—God reveals His instrument of judgment: the Chaldean (Babylonian) empire, characterized as aggressive, swift, and ruthlessly expansionist. The identification of Babylon as God's agent presents the paradox that troubles Habakkuk: how can a more wicked nation (Babylon) serve as God's instrument against Judah? The verse introduces the central theodicy tension.