Joshua blessed him; and he gave Hebron to Caleb the son of Jephunneh for an inheritance.
"Unto this day ..."  This is precisely the kind of etiological expression that critics seize upon in order to make it the grounds of all kinds of irresponsible allegations.  Yes, as Woudstra said, "All history has an etiological element in it, seeking to preserve those memories of the past that make the present meaningful.  This kind of etiology is squarely rooted in fact, and not in fictitious compositions invented by the author."[31]  "Unto this day," "to this day," etc.  "are actually meant as the confirmation of the veracity of the account."[32]  In this usage, the words are absolutely idiomatic.  They are not a typical expression introducing an etiological tale.  It is possible of course, that the words were added in days following the death of Joshua by some inspired author such as Samuel, Ezra, Nehemiah, or others unknown to us.  They have no bearing whatever upon allegations of a late date for Joshua.