Isaiah 5:26

And he will lift up an ensign i.e. a signal, set up on a hill (Isaiah 13:2; Isaiah 18:3; Isaiah 30:17; cf. Isaiah 11:10; Isaiah 11:12) as a point of rendezvous. (Mark the significant change to the future tense.) the nations from far better, a nation from afar (cf. Amos 6:14). The singular is demanded by what follows, and is obtained by removing the last letter of one word to the beginning of the next, exactly as in Jeremiah 5:15. will hiss as in ch. Isaiah 7:18; Zechariah 10:8. The image is that of a bee-keeper alluring the swarm.

with speed swiftly because it is Jehovah who calls. "They" should be "he," to the end of the chapter, the nation being individualised.