They shall run to and fro in the city,.... Leap about from place to place, as locusts do; see Isa 33:4; and as the Chaldeans did when they became masters of the city of Jerusalem; they ran about from place to place to seize upon their spoil and plunder:they shall run upon the wall; which before they climbed, now they shall run upon, and go from tower to tower, as the Chaldeans did, and broke clown the walls and fortifications:they shall climb up upon the houses, and enter in at the windows, like a thief; so the locusts entered into the houses of the Egyptians, Ex 10:6; and Pliny says , they will eat through everything, and even the doors of houses.
Theodoret on the place observes, that not only this may be done by enemies, what is here said,"but even [we have often seen] it done by locusts; for not only flying, but even creeping up the walls, they enter into houses at the windows.'
' Nat. Hist. l. 11. c.