“…And I shall multiply My signs and My wonders in the land of Egypt.” 7:3
The plagues served a purpose greater than just to punish Egypt. As the epicenter of culture, idolatry, and philosophy in the ancient world, Egypt was the ideal location for G-d to demonstrate His power and dominion over the universe. Each of the plagues was uniquely designed to demonstrate a specific facet of G-d’s control over nature. It is to symbolize their dual purpose that the plagues are referred to in the Torah not only as plagues, but also as signs and wonders.