What does Exodus 8:5 mean?
As with the first plague, Aaron receives a command to gesture with his staff to trigger a plague against Egypt (Exodus 7:19). Once again, the target is all of Egypt's surface waters, including ponds and canals. These were recently turned into blood (Exodus 7:20–23), Scripture doesn't specify if the first plague had ended (Exodus 7:25) when this one began. It seems likely that frogs would almost immediately flee the river once the water became blood. Regardless of the timing, the start and end of this plague are explicitly credited to the Lord (Exodus 8:9–10).This plague will directly affect Pharaoh and his own household (Exodus 8:3–4). He may have escaped hardship in the first plague thanks to the labor of his servants (Exodus 7:24). That will not be possible this time.