Exodus 7:2-5

2Tell Aaron everything I command you, and Aaron must command Pharaoh to let the people of Israel leave his country.

3But I will make Pharaoh’s heart stubborn so I can multiply my miraculous signs and wonders in the land of Egypt.

4Even then Pharaoh will refuse to listen to you. So I will bring down my fist on Egypt. Then I will rescue my forces—my people, the Israelites—from the land of Egypt with great acts of judgment.

5When I raise my powerful hand and bring out the Israelites, the Egyptians will know that I am the Lord.”