Charles Ellicott Commentary Isaiah 29:6

"She shall be visited of Jehovah of hosts with thunder, and with earthquake, and great noise, with whirlwind and tempest, and the flame of a devouring fire." — Isaiah 29:6 (ASV)

Thou shalt be visited ... —Better, She (i.e., Jerusalem). The words may be figurative, but they may also be literal. Some terrific storm, acting as an angel of the Lord (Isaiah 37:36; Psalms 104:4), should burst at once upon Jerusalem and the hosts that were encamped against her, bringing to her safety, but to them destruction. As in the next verse, the multitude of all nations of the great host of Assyria should be as a dream, a vision of the night.