Exodus 7:14

The First Blow: Water to Blood

7:14 The Lord said to Moses, “Pharaoh’s heart is hard; he refuses to release the people.

Exodus 8:2

8:2 But if you refuse to release them, then I am going to plague all your territory with frogs.

Exodus 10:4

10:4 But if you refuse to release my people, I am going to bring locusts into your territory tomorrow.