Judges 11:34-40 NIV

34 When Jephthah returned to his home in Mizpah, who should come out to meet him but his daughter, dancing1 to the sound of tambourines!2 She was an only child.3 Except for her he had neither son nor daughter.

References for Judges 11:34

35 When he saw her, he tore his clothes4 and cried, "Oh! My daughter! You have made me miserable and wretched, because I have made a vow to the LORD that I cannot break.5"

References for Judges 11:35

36 "My father," she replied, "you have given your word to the LORD. Do to me just as you promised,6 now that the LORD has avenged you7 of your enemies,8 the Ammonites.

References for Judges 11:36

37 But grant me this one request," she said. "Give me two months to roam the hills and weep with my friends, because I will never marry."
38 "You may go," he said. And he let her go for two months. She and the girls went into the hills and wept because she would never marry.
39 After the two months, she returned to her father and he did to her as he had vowed. And she was a virgin. From this comes the Israelite custom
40 that each year the young women of Israel go out for four days to commemorate the daughter of Jephthah the Gileadite.