Albert Barnes Commentary Isaiah 2:10

"Enter into the rock, and hide thee in the dust, from before the terror of Jehovah, and from the glory of his majesty." — Isaiah 2:10 (ASV)

Enter into the rock - That is, into the “holes or caverns” in the rocks, as a place of refuge and safety (compare Isaiah 2:19 and Revelation 6:15-16). In times of invasion by an enemy, it was natural to flee to the strongholds or caverns of rocks for refuge.

This expression is highly figurative and poetic. The prophet warns them to flee from danger. The sense is that their crimes were so great that they would certainly be punished; and he advises them to flee to a place of safety.

And hide yourself in the dust - In Isaiah 2:19, this is caves of the dust. It is parallel to the former and probably has a similar meaning. But may there not be a reference here to the prevailing method in the East of avoiding the monsoon or poisonous, heated wind that passes over the desert? Travelers there, to be safe, must throw themselves down and place their mouths close to the earth until it has passed.

For fear of the Lord - Hebrew: From the face of the terror of the Lord. That is, the punishment which God will inflict will sweep over the land, producing fear and terror.

And for the glory ... - That is, the honor or splendor which will accompany him when he comes forth to inflict judgment on the people (Isaiah 2:19–20).