Or else, fire is sent upon the earth, when by the fiery breath of the Holy Spirit, the earthly mind has all its carnal desires burnt up, but inflamed with spiritual love, bewails the evil it has done; and so the earth is burnt, when the conscience accusing itself, the heart of the sinner is consumed in the sorrow of repentance.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: in Ezech. lib. i. Hom. 2.