Rashi on Deuteronomy 32:22/רש"י על דברים ל״ב:כ״ב

1קדחה means, IT BURNS.

2ותיקד AND IT SHALL BLAZE in your midst to the very foundations (Rashi merely supplies the words “in your midst” and paraphrases עד שאול תחתית).

3ותאכל ארץ ויבלה AND IT SHALL CONSUME THE LAND WITH HER INCREASE — i.e., your land and its produce (Rashi means that ארץ does not mean “the ground”, “the soil”).

4ותלהט AND IT SHALL SET ON FIRE [THE FOUNDATIONS OF THE MOUNTAINS] — i.e. Jerusalem that is founded on the mountains, as it is said, (Psalms 125:2) “Jerusalem, mountains are round about it” (Sifrei Devarim 320:12).