http://www.morim.org/getfile.aspx?id=5962
FYI: There is some debate as to whether the fourth plague was flies or wild animals.
(עָרוֹב): Ex. 8:20–32
This is what the LORD says: Let my people go, so that they may worship me. If you do not let my people go, I will send swarms of flies upon you and your officials, on your people and into your houses. The houses of the Egyptians will be full of flies, and even the ground where they are. | ||
— Exodus 8:20–21 |
The word עָרוֹב has caused a difference of opinion among traditional interpreters. The root meaning is related to mixing. While most traditional interpreters understand the plague as "wild animals", Gesenius along with many modern interpreters understand the plague as a swarm of flies.