Nahum 1-3 (The Daily Walk Bible).
Nineveh (Assyria) thought that it was untouchable, but Nahum reminds them of their own history. They came against Thebes, which had allies and great fortifications because of the Nile (3:8-9), and destroyed the city in 664/663 B.C. They were not better fortified and had no allies, so why did they think they were untouchable? Perhaps a reminder for us that “pride goes before destruction, and a haughty spirit before a fall” (Proverbs 16:18).
The other reminder is that the revival in our own hearts needs to be continuous. Nineveh repented at the preaching of Jonah, and then fell back on their old ways. Following God requires constant diligence!