Charles Ellicott Commentary Isaiah 33:3

"At the noise of the tumult the peoples are fled; at the lifting up of thyself the nations are scattered." — Isaiah 33:3 (ASV)

At the noise of the tumult ... —The people are the mingled nations of the Assyrian armies; the tumult is that of the rush and crash, as of a mighty tempest, when Jehovah should at last uplift Himself for the deliverance of His chosen ones.