"the men of the city, that is, the men of [Sodom](rc://en/tw/dict/bible/names/sodom)" or just "the men of the city of [Sodom](rc://en/tw/dict/bible/names/sodom)"
"from the youngest to the oldest." This means "men of all ages" and refers to the men of [Sodom](rc://en/tw/dict/bible/names/sodom) who were surrounding [Lot](rc://en/tw/dict/bible/names/lot)'s house.