Moses addresses the Israelites, reminding them of the extraordinary favors and miracles they personally witnessed. Experiencing these events firsthand naturally sparks a deep, intense love for God, a feeling much stronger than what future generations might experience simply by hearing the stories. Although the original generation that left Egypt had largely passed away, Moses is speaking to a second generation, most of whom had lived in Egypt for twenty years before the Exodus. These individuals vividly remembered everything that happened [העמק דבר].
The miracles Moses recalls refer specifically to the Ten Plagues. These plagues were direct divine interventions that struck people and their property. The ultimate goal of these actions was to completely reshape a person's worldview and belief system [רש״ר הירש]. Naturally, these powerful blows were aimed primarily at Pharaoh, as he was the central figure and the main target of God's actions [אבן עזרא].
A careful distinction is made regarding where these events took place. The miracles occurred deep inside the heart of Egypt. This detail draws a clear line between the plagues that struck the Egyptians internally within their own borders and the subsequent miracles that happened later on the shores of the sea [ביאור יש״ר].