And they burnt
saraph (saw-raf')
to be (causatively, set) on fire -- (cause to, make a) burn(-ing), up) kindle, utterly.
all their cities
`iyr (eer)
or (in the plural) par {awr}; or ayar (Judges 10:4) {aw-yar'}; a city (a place guarded by waking or a watch) in the widest sense (even of a mere encampment or post) -- Ai (from margin), city, court (from margin), town.
wherein they dwelt
mowshab (mo-shawb')
a seat; figuratively, a site; abstractly, a session; by extension an abode (the place or the time); by implication, population
and all their goodly castles
tiyrah (tee-raw')
a wall; hence, a fortress or a hamlet -- (goodly) castle, habitation, palace, row.
with fire
'esh (aysh)
fire -- burning, fiery, fire, flaming, hot.