Following are a number of back-translations as well as a sample translation for translators of Judges 11:39:

• Kupsabiny: “And when two months had ended, the girl returned home. Then, her father did to the girl as he had sworn to God. So, it became a custom in Israel” (Source: Kupsabiny Back Translation)
• Newari: “After the two months were over, she returned to her father’s place and Jephthah did as he had promised. She had never slept with any man.” (Source: Newari Back Translation)
• Hiligaynon: “After two months, she returned to her father. And Jefta fulfilled what he swore to the LORD, and his child died a virgin. This was the beginning of the custom of Israel” (Source: Hiligaynon Back Translation)
• English: “After two months, she returned to her father Jephthah, and he did to her what he had vowed. So his daughter never was married.
  Because of that, the Israelis now have a custom.” (Source: Translation for Translators)