When Pharaoh speaks to you, saying, Give a wonder for yourselves, you shall say to Aaron, Take your staff and throw it before Pharaoh; and let it become a snake.
And Moses stretched out his staff over the land of Egypt. And Jehovah drove an east wind on the land all that day and all that night. And when it was morning the east wind lifted up the locusts.
And Moses stretched out his staff to the heavens. And Jehovah gave thunder and hail. And fire came down to the earth, and Jehovah rained hail on the land of Egypt.
Speak and say, So says the Lord Jehovah: Behold, I am against you, Pharaoh king of Egypt, great monster who lies in the midst of his rivers, who has said, My river is mine, and I have made it.
But answering, He said to them, An evil and adulterous generation seeks a sign, and a sign shall not be given to it, except the sign of Jonah the prophet.