What does Exodus 8:22 mean?
When Israel first moved into Egypt, they settled in a region called Goshen (Genesis 45:10). This was apparently close to the main cities of the Nile Delta, but not in the exact same territory. Some modern archaeologists place it northeast of modern-day Cairo. At first, the separate location was meant to keep unpopular Israelite practices away from Egyptians who may have been offended (Genesis 46:34). Eventually, the arrangement would allow Egypt to control their slaves without needing to integrate them into their daily lives (Exodus 1:11–14). Here, we see this distinction made for the first time in reference to the plagues (Exodus 3:19–20).The Lord promises the flies will cause problems only for the Egyptians. The given reason is to show that God is the One True God. Each of the ten plagues expresses the Lord's control over all things. Most of the catastrophes also strike against belief in various Egyptian idols. Gods associated with the Nile, insects, weather, light, and disease appear helpless against the God of Israel.