Judges 11:37-39

37And she said unto her father, Let this thing be done for me: let me alone two months, that I may go up and down upon the mountains, and bewail my virginity, I and my fellows.1

38And he said, Go. And he sent her away for two months: and she went with her companions, and bewailed her virginity upon the mountains.

39And it came to pass at the end of two months, that she returned unto her father, who did with her according to his vow which he had vowed: and she knew no man. And it was a custom in Israel,2