In Y'hoshua 15:15Y'hoshua 15:15, and again in Shof'tim 1:11Shof'tim 1:11, going to the city of דְּבִיר is referred to as "going to יוֹשְׁבֵי דְּבִיר" (something if not unique then nearly so (in Y'hoshua, anyway; I haven't learned much of Shof'tim recently)). Why?