Thematic Bible: Jephthah's vow

whatever comes out from the doors of my house to meet me when I return safely from the {Ammonites} will be Yahweh's, and I will offer it [as] a burnt offering." And Jephthah crossed [over] to the {Ammonites} to make war against them; and Yahweh gave them into his hand. And he defeated them [with] a very great blow, from Aroer as far as Minnith, twenty towns, up to Abel Keramim. And the {Ammonites} were subdued before the {Israelites}. read more.
Jephthah came to Mizpah, to his house, and behold his daughter came out to meet him with tambourines and dancing. She [was] his only child; he did not have a son or daughter except her. And the moment he saw her, he tore his clothes and said, "Ah! My daughter, you have caused me to bow down, and you have become my trouble. {I made an oath} to Yahweh, and I cannot take [it] back." She said to him, "My father, {you made an oath} to Yahweh. Do to me according to what has gone out from your mouth, since Yahweh gave vengeance to you against your enemies, the {Ammonites}." And she said to her father, "Let this thing be done for me: grant me two months so that I may go wander on the mountains and lament over my virginity, I and my companions. And he said, "Go." He sent her away [for] two months, and she went with her friends, and she lamented over her virginity on the mountains. At the end of the two months she returned to her father, and he did to her [according to] his vow; and {she did not sleep with a man}. And it became an annual custom in Israel