Albert Barnes Commentary Isaiah 2:21

"to go into the caverns of the rocks, and into the clefts of the ragged rocks, from before the terror of Jehovah, and from the glory of his majesty, when he ariseth to shake mightily the earth." — Isaiah 2:21 (ASV)

To go - That is, that he may go.

Clefts of the rocks - See the note at (Isaiah 2:19).

Into the tops ... - The tops of such rocks were not easily accessible and were, therefore, considered places of safety. We may remark here how vain were the refuges to which they would resort—as if they were safe from “God” when they had fled to the places where they sought safety from “man.”

The image here is, however, one that is very sublime. The earth shaking; the consternation and alarm of the people; their renouncing confidence in all to which they had trusted; their rapid flight; and their appearing on the high projecting cliffs, are all sublime and terrible images. They denote the severity of God’s justice, and the image is a faint representation of the consternation of people when Christ shall come to judge the earth (Revelation 6:15–17).