A city full of commotion, tumult, revelry. Fear grips them (not physical enemies). People were taken captives because of the fears in them, not the actual physical enemies. Defenses were stripped away (by the Lord) before they fell to the enemies. It means that God actually gives us defenses in the spiritual realm. The city fell to the physical enemies because spiritual defenses were down!
Isaiah 22:1-5 NIV A prophecy against the Valley of Vision:
What troubles you now,
that you have all gone up on the roofs,
2 you town so full of commotion,
you city of tumult and revelry?
Your slain were not killed by the sword,
nor did they die in battle.
3 All your leaders have fled together;
they have been captured without using the bow.
All you who were caught were taken prisoner together,
having fled while the enemy was still far away.
4 Therefore I said, “Turn away from me;
let me weep bitterly.
Do not try to console me
over the destruction of my people.”
5 The Lord, the Lord Almighty, has a day
of tumult and trampling and terror
in the Valley of Vision,
a day of battering down walls
and of crying out to the mountains.