He sent among them swarms of flies, which devoured them, and frogs, which destroyed them.
PSALM 78 To comprehend many things within small compass, it is to be observed, that in this psalm there are two leading topics. On the one hand, it is declared how God adopted for himself a Church from the posterity of Abraham, how tenderly and graciously he cherished it, how wonderfully he brought it out of Egypt, and how varied were the blessings which he bestowed upon it.
Commenting on Psalm 78:1-72
He sent diverse sorts of flies among them, which devoured them. Small creatures become great tormentors. When they swarm they can sting a man till they threaten to eat him up. In this case, various orders of insects fought under the same banner; lice and beetles, gnats and hornets, wasps and gadflies dashed forward in fierce battalions, and worried the sinners of Egypt without mercy.
The matter and scope of this paragraph are the same with the former, showing what great mercies God had bestowed upon Israel, how provoking they had been, what judgments he had brought upon them for their sins, and yet how, in judgment, he remembered mercy at last.
Commenting on Psalm 78:40-72