Commentaire sur Le Lévitique 26:31

ונתתי את עריכם חרבה AND I WILL MAKE YOUR CITIES WASTE — I might think that this means that they will be so waste that there will be no human being there (no inhabitants)! But when Scripture states (v. 32) “I will bring the land into desolation” its becoming desolate of human beings is expressed there. How, then, must I explain the words "[and I will make your cities] waste”? That there will not even be occasional passers to and fro — no occasional visitors (cf. Sifra, Bechukotai, Section 1 4).

ונתתי עריכם חרבה, at the hands of the King of Babylon and his hordes.

ונתתי את עריכם חרבה, "and I will turn your cities into ruins." The Torah means that not only will our cities no longer be a model for other nations but that they will be inferior to the civilisation of the Gentile nations. This is a source of great distress. Isaiah had this in mind when he described the cities of Yehudah and Zion as being turned into a desert (Isaiah 64,9) unless the Jewish people would mend their ways.