The ground a person decides cannot be taken is the only ground guaranteed to stay out of their hands.
An obstacle becomes a verdict the moment nobody checks it. Iron in enemy hands was counted, weighed, and converted into a feeling of certainty; certainty set the state, and the state produced a request for easier land instead of a plan for that land. An inheritance shrinks to the size of the estimate made about it.
Joshua answers with labor rather than reassurance, because work turns a fence back into a question. A forest tested either falls or teaches; a forest avoided does neither. A tribe that trades its hill country for a complaint about chariots keeps the complaint, and farms the valley while the ridge belongs to whoever swung an axe.