Exodus 7:3-5

Young's Literal Translation

³ `And I harden the heart of Pharaoh, and have multiplied My signs and My wonders in the land of Egypt,

⁴ and Pharaoh doth not hearken, and I have put My hand on Egypt, and have brought out My hosts, My people, the sons of Israel, from the land of Egypt by great judgments;

⁵ and the Egyptians have known that I [am] Jehovah, in My stretching out My hand against Egypt; and I have brought out the sons of Israel from their midst.'