* in their.  Heb. on their heap.
   The Vulgate, Syriac, Onkelos and Waterland render {(836c) tillom,}
   "on their hills."  As the cities of the plain might be easily
   attacked and carried, Joshua destroyed them; but as those on
   mountains, hills, or other eminences, might be retained by him
   with little trouble, prudence would dictate their
   preservation.

  Jer 30:18