29 Then the Spirit of the Lord was upon Jephthah, and he passed through Gilead and Manasseh and passed on to Mizpah of Gilead, and from Mizpah of Gilead he passed on to the Ammonites. 30 And Jephthah made a vow to the Lord and said, "If you will give the Ammonites into my hand, 31 then whatever[1] comes out from the doors of my house to meet me when I return in peace from the Ammonites shall be the Lord's, and I will offer it[2] up for a burnt offering." 32 So Jephthah crossed over to the Ammonites to fight against them, and the Lord gave them into his hand. 33 And he struck them from Aroer to the neighborhood of Minnith, twenty cities, and as far as Abel-keramim, with a great blow. So the Ammonites were subdued before the people of Israel. 34 Then Jephthah came to his home at Mizpah. And behold, his daughter came out to meet him with tambourines and with dances. She was his only child; besides her he had neither son nor daughter. 35 And as soon as he saw her, he tore his clothes and said, "Alas, my daughter! You have brought me very low, and you have become the cause of great trouble to me. For I have opened my mouth to the Lord, and I cannot take back my vow." 36 And she said to him, "My father, you have opened your mouth to the Lord; do to me according to what has gone out of your mouth, now that the Lord has avenged you on your enemies, on the Ammonites." 37 So she said to her father, "Let this thing be done for me: leave me alone two months, that I may go up and down on the mountains and weep for my virginity, I and my companions." 38 So he said, "Go." Then he sent her away for two months, and she departed, she and her companions, and wept for her virginity on the mountains. 39 And at the end of two months, she returned to her father, who did with her according to his vow that he had made. She had never known a man, and it became a custom in Israel 40 that the daughters of Israel went year by year to lament the daughter of Jephthah the Gileadite four days in the year.
Matthew Henry's Commentary on Judges 11:29-49
Commentary on Judges 11:29-40
(Read Judges 11:29-40)
Several important lessons are to be learned from Jephthah's vow. 1. There may be remainders of distrust and doubting, even in the hearts of true and great believers. 2. Our vows to God should not be as a purchase of the favour we desire, but to express gratitude to him. 3. We need to be very well-advised in making vows, lest we entangle ourselves. 4. What we have solemnly vowed to God, we must perform, if it be possible and lawful, though it be difficult and grievous to us. 5. It well becomes children, obediently and cheerfully to submit to their parents in the Lord. It is hard to say what Jephthah did in performance of his vow; but it is thought that he did not offer his daughter as a burnt-offering. Such a sacrifice would have been an abomination to the Lord; it is supposed she was obliged to remain unmarried, and apart from her family. Concerning this and some other such passages in the sacred history, about which learned men are divided and in doubt, we need not perplex ourselves; what is necessary to our salvation, thanks be to God, is plain enough. If the reader recollects the promise of Christ concerning the teaching of the Holy Spirit, and places himself under this heavenly Teacher, the Holy Ghost will guide to all truth in every passage, so far as it is needful to be understood.