Judges 11:37-39

37So she said to her father, "Let this thing be done for me: leave me alone two months, that I may go up and down on the mountains and weep for my virginity, I and my companions."

38So he said, "Go." Then he sent her away for two months, and she departed, she and her companions, and wept for her virginity on the mountains.

39And at the end of two months, she returned to her father, who did with her according to his vow that he had made. She had never known a man, and it became a custom in Israel