The LORD said to Moshe, "Par`oh's heart is stubborn. He refuses to let the people go.
Go to Par`oh in the morning. Behold, he goes out to the water; and you shall stand by the river's bank to meet him; and the rod which was turned to a serpent you shall take in your hand.
You shall tell him, 'The LORD, the God of the Hebrews, has sent me to you, saying, "Let my people go, that they may serve me in the wilderness:" and, behold, until now you haven't listened.
Thus says the LORD, "In this you shall know that I am the LORD. Behold, I will strike with the rod that is in my hand on the waters which are in the river, and they shall be turned to blood.
The fish that are in the river shall die, and the river shall become foul; and the Mitzrim shall loathe to drink water from the river."'"
The LORD said to Moshe, "Tell Aharon, 'Take your rod, and stretch out your hand over the waters of Mitzrayim, over their rivers, over their streams, and over their pools, and over all their ponds of water, that they may become blood; and there shall be blood throughout all the land of Mitzrayim, both in vessels of wood and in vessels of stone.'"
Moshe and Aharon did so, as the LORD commanded; and he lifted up the rod, and struck the waters that were in the river, in the sight of Par`oh, and in the sight of his servants; and all the waters that were in the river were turned to blood.
The fish that were in the river died; and the river became foul, and the Mitzrim couldn't drink water from the river; and the blood was throughout all the land of Mitzrayim.
The magicians of Mitzrayim did in like manner with their enchantments; and Par`oh's heart was hardened, and he didn't listen to them; as the LORD had spoken.
Par`oh turned and went into his house, neither did he lay even this to heart.
All the Mitzrim dug round about the river for water to drink; for they couldn't drink of the water of the river.