Judges 11:39-40

King James Version

³⁹ And 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,

⁴⁰ That the daughters of Israel went yearly to lament the daughter of Jephthah the Gileadite four days in a year.