Their refuge will be mountain fortress

 

The sinners in Zion are terrified; trembling grips the godless: "Who of us can dwell with the consuming fire? Who of us can dwell with everlasting burning?"
He who walks righteously and speaks what is right, who rejects gain from extortion and keeps his hand from accepting bribes, who stops his ears against plots of murder and shuts his eyes against contemplating evil-
this is the man who will dwell on the heights, whose refuge will be the mountain fortress. His bread will be supplied, and water will not fail him.
 
▣Isaiah 33:14~16

The sinners in Zion ,in a passage(Isaiah 33:14),were the immoral Jewish people.And they were the illegal people.This passage is set at war between Assur and Judah.

In the war,Isaiah mensioned the sinners in Zion. Even though many troops invaded Judah,

『He who walks righteously and speaks what is right, who rejects gain from extortion and keeps his hand from accepting bribes, who stops his ears against plots of murder and shuts his eyes against contemplating evil』

There's no reason to be afraid for them,their refuge would be mountain fortress.Only the sinners in Zion would shake with fright.In other words,the sinners in Zion might be such people.

Isaiah said:

In your thoughts you will ponder the former terror: "Where is that chief officer? Where is the one who took the revenue? Where is the officer in charge of the towers?"
You will see those arrogant people no more, those people of an obscure speech, with their strange, incomprehensible tongue.

▣Isaiah 18~19

And Isaiah confessed:

For the LORD is our judge, the LORD is our lawgiver, the LORD is our king; it is he who will save us.

 

▶http://cafe.daum.net/churchre/9ZUQ/1