Jóel 2:9

⁹ Po městě těkati budou, po zdech běhati, na domy vstupovati, a okny polezou jako zloděj.

Locust out of the smoke

In Revelation 9:3, this signifies that from hellish falsities people in the church become materially and sensually oriented. (Apocalypse Explained 543)

¹⁶ Give glory to Yahweh your God, before he causes darkness, and before your feet stumble on the dark mountains, and, while you look for light, he turns it into the shadow of death, and makes it gross darkness.