It happened at the end of two months, that she returned to her father, who did with her according to his vow which he had vowed: and she was a virgin. It was a custom in Israel,
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.] 