Moreover, the multitude— Vitringa is of opinion, that this passage sets forth the event of these hostile attempts against Jerusalem, particularly with respect to the Assyrians; in which view it is extremely clear: while others think that these words should be connected with those preceding, and that the prophet continues in them to describe the judgment to be inflicted on Jerusalem. In Vitringa's sense, which, says he, after long and diligent meditation, I prefer to any other, the words, Thou shalt be visited, should be read, and accordingly they are read by him, They [the multitude] shall be visited.
Related Commentaries of Isaiah 29:5
Isaiah 29:5-6
5 Moreover the multitude of thy strangers shall be like small dust, and the multitude of the terrible ones shall be as chaff that passeth away: yea, it shall be at an instant suddenly.
6 Thou shalt be visited of the LORD of hosts with thunder, and with earthquake, and great noise, with storm and tempest, and the flame of devouring fire.