From there they advanced against the people living in Debir (formerly called Kiriath Sepher). (NIV)
From there [Judah] went against the inhabitants of Debir. The name of Debir before was Kiriath-sepher [city of books and scribes]. (AMP)
And from thence he went against the inhabitants of Debir: and the name of Debir before was Kirjathsepher: (KJV)