Exodus 7:3-5

American Standard Version

³ And I will harden Pharaoh’s heart, and multiply my signs and my wonders in the land of Egypt. ⁴ But Pharaoh will not hearken unto you, and I will lay my hand upon Egypt, and bring forth my hosts, my people the children of Israel, out of the land of Egypt by great judgments. ⁵ And the Egyptians shall know that I am Jehovah, when I stretch forth my hand upon Egypt, and bring out the children of Israel from among them.