Exodus 7:13 DBY

¹¹  And Pharaoh also called the sages and the sorcerers; and they too, the scribes of Egypt, did so with their enchantments:

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

¹³  And Pharaoh's heart was stubborn, and he hearkened not to them, as Jehovah had said.

¹⁴  And Jehovah said to Moses, Pharaoh's heart is hardened: he refuseth to let the people go.

¹⁵  Go unto Pharaoh in the morning -- behold, he will go out unto the water -- and take thy stand by the bank of the river in front of him; and take in thy hand the staff that was turned into a serpent.