en_tn_lite_do_not_use/pro/21/22.md

scales the city

"climbs up and over the wall that surrounds the city"

the city of the mighty ones

"a city in which mighty men are living" or "a city of mighty warriors"

he brings down

This is an idiom. AT: "he destroys" (See: rc://en/ta/man/translate/figs-idiom)

the stronghold in which they trusted

"the walls and towers around the city that they did not think anyone would be able to get past into the city, so they felt safe"