Exodus 7:14-25 - Plague One: Blood
14 And LORD said to Moses, Pharaoh's heart is stubborn; he refuses to let the people go. 15 Get thee to Pharaoh in the morning, lo, he goes out to the water, and thou shall stand by the river's edge to meet him, and the rod which was turned to a serpent thou shall take in thy hand. 16 And thou shall say to him, LORD, the God of the Hebrews, has sent me to thee, saying, Let my people go, that they may serve me in the wilderness. And, behold, until now thou have not hearkened. 17 Thus says LORD, In this thou shall know that I am LORD. Behold, I will smite with the rod that is in my hand upon the waters which are in the river, and they shall be turned to blood. 18 And the fish that are in the river shall die, and the river shall become foul, and the Egyptians shall loathe to drink water from the river.
19 And LORD said to Moses, Say to Aaron, Take thy rod, and stretch out thy hand over the waters of Egypt, over their rivers, over their streams, and over their pools, and over all their ponds of water, that they may become blood, and
20 And Moses and Aaron did so, as LORD commanded. And he lifted up the rod, and smote the waters that were in the river, in the sight of Pharaoh, and in the sight of his servants, and all the waters that were in the river were turned 21 And the fish that were in the river died, and the river became foul, and the Egyptians could not drink water from the river. And the blood was throughout all the land of Egypt.
22 And the magicians of Egypt did in like manner with their enchantments. And Pharaoh's heart was hardened, and he did not hearken to them, as LORD had spoken. 23 And Pharaoh turned and went into his house, neither did he lay even this to heart. 24 And all the Egyptians dug round about the river for water to drink, for they could not drink of the water of the river. 25 And seven days were fulfilled, after LORD had smitten the river.