Joshua 18:4

4.Give out from among you three men, etc Caleb and Joshua had already surveyed those regions, and the people had learned much by inquiry: Joshua, however, wishes the land to be divided as if according to actual survey (162) and orders three surveyors to be appointed for each of the seven tribes, in order that by the mouth of two or three persons every dispute may be settled. But nothing seems more incongruous than to send twenty-one men, who were not only to pass directly through a hostile country, but to trace it through all its various windings and turnings, so as not to leave a single corner unexamined, to calculate, its length and breadth, and even make due allowance for its inequalities. Every person whom they happened to meet must readily have suspected who they were, and for what reason they had been employed on this expedition. In short, no free return lay open for them except through a thousand deaths. Assuredly they would not have encountered so much danger from blind and irrational impulse, nor would Joshua have exposed them to such manifest danger had they not been aware that all those nations, struck with terror from heaven, desired nothing so much as peace. For although they hated the children of Israel, still, having been subdued by so many overthrows, they did not dare to move a finger against them, and thus the surveyors proceeded in safety as through a peaceful territory, under the pretext either of trading, or at least of making a harmless visit. (163) It is also possible that they arranged themselves in different parties, and thus made the journey more secretly. It is certain, indeed, that there was only one source from which they could have derived all this courage and confidence, from trusting under the shadow of the wings of the Almighty, and thus having no fear of blind and stupid men. Hence the praise here bestowed on their ready will. For had they not been persuaded that the hands of those nations were tied up by supernal power, they would have had a just and honest cause for refusing. (164)