Psalms 78:45 - Exposition

He sent divers sorts of flies among them (see Exodus 8:24 ). A particular sort of fly or beetle is meant, rather than many different sorts. Dr. Kay and Professor Cheyne suggest "dog flies"—Canon Cook, the Blatta Orientalis. Which devoured them; i.e. "preyed upon them," sucking out their life blood. And frogs, which destroyed them (see Exodus 8:6 ). The poet, not being an historian, does not give the plagues in their chronological order, neither regards himself as bound to mention all of them. He omits the third, and reverses the order of the second and fourth.