Exodus 7:13-15

Darby Translation

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.