Judges 1:11-13
1:11 From there they attacked the people of Debir. (Debir used to be called Kiriath Sepher.)
1:12 Caleb said, “To the man who attacks and captures Kiriath Sepher I will give my daughter Acsah as a wife.”
1:13 When Othniel son of Kenaz, Caleb’s younger brother, captured it, Caleb gave him his daughter Acsah as a wife.