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15And he went up from there against the inhabitants of Debir; now the name of Debir formerly was Kir'iath-se'pher. 16And Caleb said, "Whoever smites Kir'iath-se'pher, and takes it, to him will I give Achsah my daughter as wife." 17And Oth'ni-el the son of Kenaz, the brother of Caleb, took it; and he gave him Achsah his daughter as wife.
Joshua 15:15-17 (RSV)