Exodus 07 Pharaoh's heart hardened shows

Exodus 07
Pharaoh's heart hardened shows
14 And the LORD said unto Moses, Pharaoh's heart is hardened; refuses to let the people go.
15 Go to Pharaoh in the morning; behold, he will ace waters; puts you in front of him on the river beach, and take in your hand the rod which was turned into a snake.
16 And you shall say: The Lord, the God of the Hebrews, has sent me unto thee, saying, Let my people go, that they may serve me in the wilderness; behold, until now you have not heard.
17 Thus saith the Lord: By this you shall know that I am the LORD, Behold, I with the rod, I have in my hand I will strike the waters which are in the river, and it will be blood.
18 And the fish that are in the river shall die, and the river shall stink; and nauseate will be Egyptians, drinking river water.