c. 660–614 b.c.
Nahum likely prophesied sometime between the zenith of Assyria’s power around 664 b.c. and the fall of Nineveh in 612. During this time the Assyrian Empire was in decline as Egypt, Judah, and Babylonia (with the help of the Medes) regained autonomy and eroded the power of Assyria. Nahum foretold of the fall of Nineveh, the capital of the mighty Assyrian Empire.