Exodus 6:1-8:24

Depending upon the version you are reading, the third plague involved lice or gnats. This is one of those instances that shows that translating the Bible isn't an exact science. Here are some helpful references you may wish to look at to get a better idea on what type of insect this was:

Hebrew Lexicon (Brown, Driver, Briggs, Gesenius Lexicon)
Easton's Bible Dictionary
Smith's Bible Dictionary
International Standard Bible Dictionary

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