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?
why therefore did ye not recover them within that time? signifying they ought to have put in their claim sooner, and endeavoured to have recovered them long before this time, if they had any right unto them; wherefore Jephthah pleads prescription, and which in a course of time ought to take place; or otherwise the world would be full of endless contentions and controversies, and kingdoms and states would never be at peace, nor each one know and enjoy for certainty its proper domains.