The illusion of security built on wealth and fortified walls is destined to shatter. An airtight military siege is prepared to close in on the land from every direction, leaving no route for escape. The primary approach among commentators is that a foreign enemy is poised to invade and surround the region ([מצודת ציון], [אבן עזרא], [רד״ק], [אברבנאל]), though another perspective suggests that a general wave of trouble and distress will engulf the area ([ביאור שטיינזלץ]).
This invasion is imminent and fully prepared to strike ([רש״י]). The attacking forces will camp on all sides of Samaria, ensuring a complete blockade where no one can flee ([אבן עזרא], [רד״ק], [מצודת דוד]). God will orchestrate a coalition of different nations to encircle the territory ([מלבי״ם]). Historically, this points to incursions by the Philistines and Egyptians who struck Israel's borders when the nation was already weakened by the Assyrian empire, events that took place even if they were not fully detailed in the historical records of the era.
As the siege takes hold, the pride and bravery of the people will be completely humbled ([מצודת דוד], [מצודת ציון], [אברבנאל]). There are different views on what this loss of strength entails. It may refer to the physical destruction of the city's mighty defensive towers ([אבן עזרא]). Alternatively, this strength represents the vast treasures the residents hoarded in their towering palaces, falsely believing that their wealth would serve as an unbreakable shield ([רד״ק]).
Ultimately, the grand palaces of Samaria will fall and be stripped bare by the invaders ([מצודת ציון], [ביאור שטיינזלץ]). This destruction operates on a strict principle of measure for measure. The very fortresses and estates that were once filled with wealth acquired through robbery, violence, and corruption will now become the plunder of the conquering army ([אבן עזרא], [מלבי״ם], [אברבנאל]).