Judges 11:38-40

New Revised Standard Version, Anglicised

³⁸ ‘Go,’ he said and sent her away for two months. So she departed, she and her companions, and bewailed her virginity on the mountains. ³⁹ At the end of two months, she returned to her father, who did with her according to the vow he had made. She had never slept with a man. So there arose an Israelite custom that ⁴⁰ for four days every year the daughters of Israel would go out to lament the daughter of Jephthah the Gileadite.