Exodus 7:2-5

2You shall speak all that I command you, and your brother 1Aaron shall speak to Pharaoh that he let the sons of Israel go out of his land.

3But 2I will harden Pharaoh’s heart that I may 3multiply My signs and My wonders in the land of Egypt.

4When 4Pharaoh does not listen to you, then I will lay My hand on Egypt and 5bring out My hosts, My people the sons of Israel, from the land of Egypt by 6great judgments.

57The Egyptians shall know that I am the Lord, when I 8stretch out My hand on Egypt and bring out the sons of Israel from their midst.”