But as for the cities that stood still in their strength
Whose walls were not demolished when taken, as Kimchi and Jarchi interpret it, or that "stood upon their heaps" F25; upon an eminence, being built on hills and mountains:
Israel burned none of them;
but reserved them for their own habitations, being well fortified, and having no need of new walls being built to them, or being in a very agreeable situation:
save Hazor only, [that] did Joshua burn;
because it was the chief city where the scheme was formed, and the combination against Israel was made, and was the rendezvous of the confederate forces against them: the Jews have a tradition F26, that God said to Moses, and Moses said to Joshua, that he should burn it, and that only.
F25 (Mlt le) "super tumulum eorum", Montanus; "quae erant in collibus et in tamulis sitae", V. L.
F26 Bereshit Rabba, sect. 81. fol. 71. 1.