John Gills Exposition of the Bible Commentary - Exodus 8:21
Else, if thou wilt not let my people go ,.... But remainest obstinate and inflexible: behold, I will send swarms of flies upon thee ; the word used is generally thought to signify a "mixture", and is interpreted by many a mixture of various creatures; the Targum of Jonathan paraphrases it a mixture of wild beasts, and so Josephus F11 Antiqu. l. 2. c. 14. sect. 3. understands it of all sorts of beasts, of many forms, and such as were never seen before; according to Jarchi, all sorts... read more
Matthew Henry's Complete Commentary - Exodus 8:20-32
Here is the story of the plague of flies, in which we are told, I. How it was threatened, like that of frogs, before it was inflicted. Moses is directed (Exod. 8:20) to rise early in the morning, to meet Pharaoh when he came forth to the water, and there to repeat his demands. Note, 1. Those that would bring great things to pass for God and their generation must rise early, and redeem time in the morning. Pharaoh was early up at his superstitious devotions to the river; and shall we be for... read more