Behold
The imagery of (Isaiah 30:27); (Isaiah 30:28) is cumulative. Judah is making an alliance with Egypt when she might be in league with Him whose judgment upon the world-powers will be like a terrible thunder-tempest (v.27), turning streams into torrents neck-deep (v. 28, f.c.); who will sift the nations in their own sieve of vanity (or "destruction"), and put His bridle into the jaws of the peoples.