All ye inhabitants of the world, and dwellers on the earth,.... All the men of the world are here called upon, either by the Lord, or rather by the prophet, to be eye and ear witnesses of the judgment that should be inflicted upon the above nation, and of the salvation of his own people; which should be so manifest, that all should see it as easily as an ensign set up on a mountain; and the news of it should ring through the earth, and be as plainly heard as when a trumpet is blown: unless it should be thought that these are the words of the messengers sent to the above nation, addressing them in such terms, assuring them, that, however stupid and secure they were now, they should quickly see the sign and hear the alarm of war; it being usual to call any large kingdom the world, and the earth:see ye, when be lifteth up an ensign on the mountains; or ye shall see this as clearly as when a flag is set up on a mountain; or ye shall be sensible of this judgment coming on, when a standard shall be set up on the mountains, to gather the people to war.
Vitringa interprets this of the mountains of Judea, where the Assyrians would set up their banners, and blow their trumpets, as follows:and when he bloweth a trumpet, hear ye; or, "ye shall hear"; the trumpet sounding as an alarm of war, by which the people will be summoned, and come to execute the judgment threatened.