For Debir see 10.38-39.

The people living in Debir is almost a word-for-word repetition of the Hebrew text; see Revised Standard Version “the inhabitants of Debir.” The sentence may be formulated to say “From there he went to attack the city of Debir, which used to be called Kiriath Sepher.”

Quoted with permission from Bratcher, Robert G. and Newman, Barclay M. A Handbook on Joshua. (UBS Helps for Translators). New York: UBS, 1983. For this and other handbooks for translators see here .