There is no allusion extant elsewhere to this annual lamentation of the untimely fate of Jephthah’s daughter. But the poetical turn of the narrative suggests that it may be taken from some ancient song (compare the marginal note 4).
Related Commentaries of Judges 11:40
Judges 11:40
40 That the daughters of Israel went yearlyh to lament the daughter of Jephthah the Gileadite four days in a year.