33 And he smote them from Aroer, even till thou come to Minnith, even twenty cities, and unto the plain  of the vineyards, with a very great slaughter. Thus the children of Ammon were subdued before the children of Israel.
33 He devastated twenty towns from Aroer to the vicinity of Minnith, as far as Abel Keramim. Thus Israel subdued Ammon.
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.
33 He beat them soundly, all the way from Aroer to the area around Minnith as far as Abel Keramim - twenty cities! A massacre! Ammonites brought to their knees by the People of Israel.
33 And he defeated them from Aroer as far as Minnith--twenty cities--and to Abel Keramim, with a very great slaughter. Thus the people of Ammon were subdued before the children of Israel.
33 He crushed the Ammonites, devastating about twenty towns from Aroer to an area near Minnith and as far away as Abel-keramim. In this way Israel defeated the Ammonites.
Matthew Henry's Commentary on Judges 11:33
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.