III. It is spoken of as a destroying day, v. 16, 17. It shall be destroying, 1. To places, even the strongest and best fortified: A day of the trumpet and alarm against the fenced cities, to break into them, and against the high towers, to bring them down; for what forts, what fences, can hold out against the wrath of God? 2. To persons (v. 17): "I will bring distress upon men, the strongest and stoutest of men; their hearts and hands shall fail them; they shall walk like blind men, wandering endlessly, because they have sinned against the Lord." Note, Those that walk as bad men will justly be left to walk as blind men, always in the dark, in doubt and danger, without any guide or comfort, and falling at length into the ditch. Because they have sinned against the Lord he will deliver them into the hands of cruel enemies, that shall pour out their blood as dust, so profusely, and with as little regret, and their flesh shall be thrown as dung upon the dunghill.