Malachi 3:11 - Matthew Poole's English Annotations on the Holy Bible

I will rebuke; lay a restraint upon, or prohibit, and the prohibition shall be effectual; if God so check, no creature is or dares be deaf to it; such a check not only quiets the unruly sea, but can dry it up. The devourer; all kinds of devourers, the locust, the canker-worm, caterpillar, &c., pests of those countries very often; though they are in mighty armies and incredible multitudes, yet a rebuke from God will check them all at once as if they were but one. For your sakes; not for merit in you, but for good to you. He shall not destroy; consume and eat it, as those vermin always did wherever they came. The fruits of your ground; corn sown by your hand, and grass springing up of its own nature, both which these locusts devour wheresoever they come, and leave penury or famine behind them. Neither shall your vine cast her fruit; no blasting or burning winds shall make them drop, no frosts or hails shall destroy your vines. This was once the plague of Egypt, Psalms 105:33-36. Before the time; your vines shall carry their fruit till they are fully ripe. In the field; where they had large vineyards and oliveyards planted, and God will make them prosper if this people will return to him.