While Israel lived in Heshbon and its towns, and in Aroer and its towns, and in all the cities that are along by the side of the Arnon, three hundred years; why didn't you recover them within that time?
Third, Jephthah appealed logically that Ammon had not tried to take the land she now claimed for 300 years. If she had a legitimate claim on it, she should have tried to secure it long ago (Judges 11:26).