19“Then Israel sent messengers to Sihon king of the Amorites, who ruled in Heshbon, and said to him, ‘Let us pass through your country to our own place.’ 20Sihon, however, did not trust Israel^b to pass through his territory. He mustered all his men and encamped at Jahaz and fought with Israel.

21“Then the Lord, the God of Israel, gave Sihon and all his men into Israel’s hands, and they defeated them. Israel took over all the land of the Amorites who lived in that country, 22capturing all of it from the Arnon to the Jabbok and from the desert to the Jordan.

23“Now since the Lord, the God of Israel, has driven the Amorites out before his people Israel, what right have you to take it over? 24Will you not take what your god Chemosh gives you? Likewise, whatever the Lord our God has given us, we will possess. 25Are you better than Balak son of Zippor, king of Moab? Did he ever quarrel with Israel or fight with them? 26For three hundred years Israel occupied Heshbon, Aroer, the surrounding settlements and all the towns along the Arnon. Why didn’t you retake them during that time? 27I have not wronged you, but you are doing me wrong by waging war against me. Let the Lord, the Judge,^c decide the dispute this day between the Israelites and the Ammonites.”

28The king of Ammon, however, paid no attention to the message Jephthah sent him.

29Then the Spirit of the Lord came upon Jephthah. He crossed Gilead and Manasseh, passed through Mizpah of Gilead, and from there he advanced against the Ammonites. 30And Jephthah made a vow to the Lord: “If you give the Ammonites into my hands, 31whatever comes out of the door of my house to meet me when I return in triumph from the Ammonites will be the Lord’s, and I will sacrifice it as a burnt offering.”

32Then Jephthah went over to fight the Ammonites, and the Lord gave them into his hands. 33He devastated twenty towns from Aroer to the vicinity of Minnith, as far as Abel Keramim. Thus Israel subdued Ammon.

34When Jephthah returned to his home in Mizpah, who should come out to meet him but his daughter, dancing to the sound of tambourines! She was an only child. Except for her he had neither son nor daughter. 35When he saw her, he tore his clothes 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.”

36“My father,” she replied, “you have given your word to the Lord. Do to me just as you promised, now that the Lord has avenged you of your enemies, the Ammonites. 37But 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. 39After 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 40that each year the young women of Israel go out for four days to commemorate the daughter of Jephthah the Gileadite.