Exodus 7-11 God displays His power as Pharaoh continues to deny Israel their freedom.
Turned Nile river into blood
Plague of frogs
Plague of Gnats
Plague of Flies
Plague against Livestock
Plague of Festering Boils
Plague of Locusts
Plague of Darkness - Moses raised his hands and darkened Egypt for 3 days
Death of the Egyptians firstborn
After this, Pharaoh finally allows Israel to go free.