Shofetim 11:34-36

Orthodox Jewish Bible

³⁴ And Yiftach came to Mitzpah unto his bais, hinei, his bat came out to meet him with tambourines and with dances; she was his yechidah (only one); beside her he had neither ben nor bat.

³⁵ And it came to pass, when he saw her, that he tore his clothes, and said, Alas, my bat! Thou hast brought me very low, and thou art one of them that trouble me; for I have opened my mouth unto Hashem, and I cannot go back.

³⁶ And she said unto him, Avi, if thou hast opened thy mouth unto Hashem, do to me according to that which hath proceeded out of thy mouth; forasmuch as Hashem hath taken vengeance for thee of thine enemies, even of the Bnei Ammon.