I’m quoting Rashi.
The topic answered the question of a photo caption indicating Jews came out of Egypt armed.
Someone asked for the Biblical reference.
I responded, noting it was a Jewish translation at variance with the KJV.
I realize Jew-hating idol-worshippers have alternative views of straightforward Jewish texts.
The Hebrew can also refer to 'fives' as well, as you yourself noted.
So, what was being pointed out was not arms, but organization.
The KJB translation was correct.
Save the venom.
People could not see one another, and for three days no one could get up from where he was; but all the Israelites enjoyed light in their dwellings. (Exo 10:23 TNK)