10 Plagues of Egypt

As I am studying for this Sunday's lesson for Sunday School on the Ten Plagues of Egypt, I am intrigued by the fact that each of ten Plagues were very symbolic showing that God did not haphazardly attack the Egyptions, but rather very systematically. Notice...
1. Turning the Waters to Blood - The Nile River was an extremely powerful god to the Egyptians, yet in an instant was rendered helpless by the power of the true God.
2. The Frogs - These were a symbol of Resurrection to the Egyptians. I imagine this abundance of frogs made them almost wish they could die. Then their resurrection gods died and were piled into heaps and stank...
3. The lice - The Egyptians worshiped lice, among other insects, and now had way too many of them! Symbolic of the fact that Egypt served too many gods.
4. The flies - In ancient times many civilizations had gods to protect them from flies...This was a symbol of the local gods inability!
5. Murrain on the Cattle - God's attack on Egypt's symbol of wealth.
6. Boils - God shows Egypt he has power over health.
7. Lightning and Hail - God shows he controls their "gods of the air"
8. Locusts - God shows he can vanquish their food supply
9. Darkness - Symbolic of the state Egypt was in.
10. The Passover - Symbolic of Salvation