John Gill Bible Commentary

And I will rebuke the devourer for your sakes,.... Or "eater" (m); the locust or caterpillar, or any such devouring creature, that eats up the herbage, corn, and fruits of trees; every such creature is under the restraint of Providence; and by a nod, a rebuke, they are easily prevented doing the mischief they otherwise would; these are the Lord's great army, which he can send and call off as he pleases, Joe 1:4, and he shall not destroy the fruits of your ground; as he has done, by eating all green things, as the locust, caterpillar, and canker worm do, grass, corn, and trees: neither shall your vine cast her fruit before the time in the field; which some understand of the devourer or locust, that that should not cause the vine to be abortive, or cast its fruit before its time, or bereave it of it; but it seems best to interpret it of the vine itself not casting its fruit, as an untimely birth, by blighting and blasting winds: saith the Lord of hosts; who holds the winds in his fists, and will not suffer them when he pleases, any more than the locusts, to hurt the trees of the earth, Rev 7:1. (m) "comedentem", Drusius, Cocceius; "eum qui comedit", Burkius.