7:9When Pharaoh shall speak to you, saying, Do a miracle for yourselves, -- then thou shalt say unto Aaron, Take thy staff and cast it before Pharaoh -- it will become a serpent.

7:10And Moses and Aaron went in to Pharaoh, and did so, as Jehovah had commanded; and Aaron cast down his staff before Pharaoh, and before his bondmen, and it became a serpent.

7:12they cast down every man his staff, and they became serpents; but Aaron's staff swallowed up their staves.