Judges 11:40

for the daughters of Israel to go and lament the daughter of Jephthah the Gileadite for forty days of the year.

Judges 5:11

At the sound of [those] dividing [the sheep] among the watering places, there they will recount the righteous deeds of Yahweh, the righteous deeds for his warriors in Israel. Then the people of Yahweh went down to the gates.

1 Kings 9:25

Solomon sacrificed three times a year: burnt offerings and fellowship offerings on the altar that he had built to Yahweh, and he offered incense with it before Yahweh; and so he completed the house.

Treasury of Scripture Knowledge

Summary

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

Lament

Four days

Bible References

Lament

Judges 5:11
At the sound of [those] dividing [the sheep] among the watering places, there they will recount the righteous deeds of Yahweh, the righteous deeds for his warriors in Israel. Then the people of Yahweh went down to the gates.

Four days

1 Kings 9:25
Solomon sacrificed three times a year: burnt offerings and fellowship offerings on the altar that he had built to Yahweh, and he offered incense with it before Yahweh; and so he completed the house.