Judges 11:37-39

37She 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.

39At 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