Judges 11:27-37

27 I therefore have not sinned against you, but you do me wrong to war against me: the LORD, the Judge, be judge this day between the children of Yisra'el and the children of `Ammon.
28 However the king of the children of `Ammon didn't listen to the words of Yiftach which he sent him.
29 Then the Spirit of the LORD came on Yiftach, and he passed over Gil`ad and Menashsheh, and passed over Mitzpeh of Gil`ad, and from Mitzpeh of Gil`ad he passed over to the children of `Ammon.
30 Yiftach vowed a vow to the LORD, and said, If you will indeed deliver the children of `Ammon into my hand,
31 then it shall be, that whatever comes forth from the doors of my house to meet me, when I return in shalom from the children of `Ammon, it shall be the LORD's, and I will offer it up for a burnt offering.
32 So Yiftach passed over to the children of `Ammon to fight against them; and the LORD delivered them into his hand.
33 He struck them from `Aro`er until you come to Minnit, even twenty cities, and to Avel-Keramim, with a very great slaughter. So the children of `Ammon were subdued before the children of Yisra'el.
34 Yiftach came to Mitzpah to his house; and, behold, his daughter came out to meet him with timbrels and with dances: and she was his only child; besides her he had neither son nor daughter.
35 It happened, when he saw her, that he tore his clothes, and said, Alas, my daughter! you have brought me very low, and you are one of those who trouble me; for I have opened my mouth to the LORD, and I can't go back.
36 She said to him, My father, you have opened your mouth to the LORD; do to me according to that which has proceeded out of your mouth, because the LORD has taken vengeance for you on your enemies, even on the children of `Ammon.
37 She said to her father, Let this thing be done for me: let me alone two months, that I may depart and go down on the mountains, and bewail my virginity, I and my companions.
The Hebrew Names Version is in the public domain.