Parallel
Isaiah 27:1
Brenton's English Septuagint · Berean Standard Bible
In that day God shall bring [his] holy and great and strong sword upon the dragon, even the serpent that flees, upon the dragon, the crooked serpent: he shall destroy the dragon.
In that day the LORD will take His sharp, great, and mighty sword, and bring judgment on Leviathan the fleeing serpent (note: Hebrew nachash; translated in most cases as snake; twice in this verse)—Leviathan the coiling serpent—and He will slay the dragon of the sea.