Matthew Poole and continuators on Amos 3:11

11 Therefore thus saith the Lord GOD, An adversary there shall be even round about the land : and he shall bring down thy strength from thee , and thy palaces shall be spoiled .

Because of all the violence and rapine with other crying sins multiplyed against God in the midst of them.

The Assyrian with united Forces

on all sides shall beset thee, the whole Land shall be but as one besieged City, out of which none or so few as next to none shall escape,

Lay low all thy fortresses, break all thy power, kill thy valiant men, destroy thy Armies, and by force take thy strong holds.

Where thou laidst up thy spoils gotten by violence and oppression; there thy Enemy shall find them, and take them away as lawful plunder, and when thy riches are carried out, they shall burn the palaces themselves too.