The use of the singular personal pronoun here supports what was stated above, that the author is referring to Caleb and his clan rather than to the whole tribe of Judah and Simeon.

 The former name of Debir was Kirjath-sepher (Joshua 15:15), which means “city of books.” Because of this meaning scholars have speculated that the city housed a famous library similar to the royal libraries that the Assyrian king Ashurbanipal built up to magnificent proportions. Most scholars agree that the city may be correctly identified as the present Tell Beit Mirsim, excavated by Dr. W. F. Albright. The ruins revealed no library, although the city was not completely excavated. The archeological evidence shows an unusually devastating conflagration, followed by a settlement of Hebrew people who rebuilt the city.