Judges 11:32

28 But the king of the Ammonites paid no heed to the message Jephthah sent him.

29 Then the Spirit of the LORD came upon Jephthah, and he passed through Gilead and Manasseh, then through Mizpah of Gilead. And from there he advanced against the Ammonites.

30 Jephthah made this vow to the LORD: “If indeed You will deliver the Ammonites into my hand,

31 then whatever comes out the door of my house to greet me on my triumphant return from the Ammonites will belong to the LORD, and I will offer it up as a burnt offering.”

32 So Jephthah crossed over to the Ammonites to fight against them, and the LORD delivered them into his hand.

33 With a great blow he devastated twenty cities from Aroer to the vicinity of Minnith, as far as Abel-keramim. So the Ammonites were subdued before the Israelites.

34 And when Jephthah returned home to Mizpah, there was his daughter coming out to meet him with tambourines and dancing! She was his only child; he had no son or daughter besides her.

35 As soon as Jephthah saw her, he tore his clothes and said, “No! Not my daughter! You have brought me to my knees! You have brought great misery upon me, for I have given my word to the LORD and cannot take it back.”

36 “My father,” she replied, “you have given your word to the LORD. Do to me as you have said, for the LORD has avenged you of your enemies, the Ammonites.”

Read all of Judges 11