It happened, when he saw her, that he tore his clothes, and said, Alas, my daughter! you have brought me very low, and you are one of those who trouble me; for I have opened my mouth to Yahweh, and I can't go back.
There are primarily two possible interpretations of the fate of Jephthah’s daughter as the record of Jephthah fulfilling his vow unfolds in this section of verses. [Note: One of the best discussions of this issue that I have found is by Robert D. Culver, "Did Jephthah Really Slay His Daughter and Offer Her Body as a Burnt Offering?" The Evangelical Christian 55:2 (February 1959):69-70.] 