It was written when swords were already around. sustained spinning by itself was new though, without axle or visible support, not pivoting on cherub's fingers. Would have looked something like a swastika with the trailing flames. and it was a defensive weapon. any animal casualties? sliced and diced?
Why did one of the cherubs not stop Cain, rather than just standing there? may be he was the first fulfillment of the wt cart cabal ?