Like warriors they charge; like soldiers they scale the wall. They march each on his way; they do not swerve from their paths.
Here we have God contending with his own professing people for their sins and executing upon them the judgment written in the law (Deu 28:42), The fruit of thy land shall the locust consume, which was one of those diseases of Egypt that God would bring upon them, Deu 28:60. I.
Commenting on Joel 2:1-11
They shall run like mighty men,.... Like men of war, in a hostile way, as soldiers run upon their enemy with undaunted courage and bravery. Bochart from Pisidas describes the locusts' manner of fighting, who says, they strike not standing, but running: they shall climb the wall like men of war; scale the walls of cities as besiegers do; walls and bulwarks cannot keep them...
Depicting the regular military order of their advance, "One locust not turning a nail's breadth out of his own place in the march" [JEROME]. Compare Pro 30:27, "The locusts have no king, yet go they forth all of them by bands."