Exodus 7:19-25 And the Lord said to Moses, Say to your brother Aaron, Take your rod in your hand, and stretch forth your hand over the waters of Egypt, and over their rivers, and over their canals, and over their ponds, and over all their standing water, and it shall become blood: and there was blood in all the land of Egypt, both in vessels of wood and of stone.

LXX2012⁽ⁱ⁾ ¹⁹ And the Lord said to Moses, Say to your brother Aaron, Take your rod in your hand, and stretch forth your hand over the waters of Egypt, and over their rivers, and over their canals, and over their ponds, and over all their standing water, and it shall become blood: and there was blood in all the land of Egypt, both in vessels of wood and of stone. ²⁰ and Moses and Aaron did so, as the Lord commanded them; and [Aaron] having lifted up [his hand] with his rod, struck the water in the river before Pharao, and before his servants, and changed all the water in the river into blood. ²¹ And the fish in the river died, and the river stank thereupon; and the Egyptians could not drink water from the river, and the blood was in all the land of Egypt. ²² And the charmers also of the Egyptians did so with their sorceries; and the heart of Pharao was hardened, and he did not listen to them, even as the Lord said. ²³ And Pharao turned and entered into his house, nor did he fix his attention even on this thing. ²⁴ And all the Egyptians dug round about the river, so as to drink water, for they could not drink water from the river. ²⁵ and seven days were fulfilled after the Lord has struck the river.