36 Then she said to him, “My father, you have given your word to the Lord. Do to me as you have said, for the Lord brought vengeance on your enemies, the Ammonites.”
37 She also said to her father, “Let me do this one thing: Let me wander two months through the mountains with my friends and mourn my virginity.”
38 “Go,” he said. And he sent her away two months. So she left with her friends and mourned her virginity as she wandered through the mountains.
39 At the end of two months, she returned to her father, and he kept the vow he had made about her. And she had never been intimate with a man. Now it became a custom in Israel
40 that four days each year the young women of Israel would commemorate the daughter of Jephthah the Gileadite.