Matthew Poole and continuators on Isaiah 18:3

3 All ye inhabitants of the world, and dwellers on the earth, see ye when he lifteth up an ensign on the mountains, and when he bloweth a trumpet , hear ye .

Take notice of what I say, and God will do. Or, Ye shall see it; you shall be Eye-witnesses of this dreadful Wo or Judgment which I am bringing upon the People of whom I have spoken. The Prophet doth in a manner summon all Nations to bear witness of his Prophecy, and of the Accomplishment thereof.

When God shall gather together the Nations, as it were by the lifting up of an Ensign, or by the sound of a Trumpet, to execute his Judgments upon this People. Heb. as when a man lifts up an ensign upon the mountains, which men can easily see; and as when a man sounds a trumpet, they can hear: no less visible and manifest shall this Judgment of God be.

Ye shall hear it, as in the other Branch.