John Gill Commentary Psalms 105:31

"He spake, and there came swarms of flies, And lice in all their borders." — Psalms 105:31 (ASV)

He spoke, and there came divers sorts of flies
Or a "mixture" ^F26 of various insects, and, as some interpret it, of wild beasts; and so Kimchi says evil beasts are meant, which were raised up to go into all their borders; the Arabic version renders it "dogflies", after the Septuagint; (See Gill on Psalms 78:45), this was the fourth plague, (Exodus 8:24) .

And lice in all their coasts ;
this is the third plague, and what the magicians could not imitate, but were obliged to own the finger of God was in it, (Exodus 8:16–19) . God can make use of mean and despicable instruments to do his work; the weakness of God is stronger than men.

---

FOOTNOTES:

• F26: (bre) "mixtura insectarum", Pagninus, Montanus; "colluvies insectarum", Piscator, Gejerus, Michaelis; "mista bestiarum", Vatablus; "colluvies animalium", Junius & Tremellius.