Fire devours before them, and behind them a flame burns. The land is like the garden of Eden before them, but behind them a desolate wilderness, and nothing escapes them.
Before them, he says, the fire will devour, and after them the flame will burn. He means that the vengeance of God would be such as would consume the whole people: for God has in various ways begun to chastise the people, but, as we have seen, without any advantage.
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
A fire devoureth before them, and behind them aflame burneth,.... This is not to be understood of the heat of the sun, or of the great drought that went before and continued after the locusts; but of them themselves, which were like a consuming fire; wherever they came, they devoured all green grass, herbs, and leaves of trees, as fire does stubble; they sucked out...