Joel 2:9

It afterwards follows, Through the city shall they march; over the wall shall they run here and there; into houses shall they climb; through the windows shall they enter like a thief. The Prophet here shows that the Jews in vain trusted in their fortified cities, for the enemies would easily penetrate into them. They shall march, he says, through the city, that is, as though there were no gates to it. The meaning then is, that though Judea abounded in cities, which seemed impregnable and appeared sufficient to arrest the course of enemies, as it had happened almost always, so that great armies were forced to desist when any strong fortified city stood in their way; yet the Prophet says that cities would be no impediment to the Assyrians at their coming to Judea, for they would march through the city, as along a plain road, where no gates are closed against them. They shall then march through the midst of cities as through a plain or open fields. To the same purpose is what follows, They shall run here and there over the wall, he says. These are indeed hyperbolical words; yet, when we consider how slow men are to fear punishment, we must allow that the Prophet in these expressions does not exceed moderation. They shall then run up and down through the city; that is, “In vain you expect that there will be to you any rest or quietness, for ye think that you sill be able for a time to sustain the onsets of your enemies: This,” he says, “will by no means be the case, for they shall run here and there over the wall, as though it were a plain. Besides, they shall climb into the houses, and enter in through the windows, and do this as a thief; that is, though there should be no hostile attack, yet they shall stealthily and secretly penetrate into your houses: when there will be a great tumult, when the whole regions shall meet in arms, and when ye will think yourselves able to resist, they will then as thieves quietly enter into your houses and come in through the windows, and ye shall not be able to close up the passage against them.”