Exodus 7:19

Overview - Exodus 7
1	Moses and Aaron are encouraged to go again to Pharaoh.
7	Their age.
8	Aaron's rod is turned into a serpent.
11	The sorcerers do the like; but their rods are swallowed up by Aaron's.
13	Pharaoh's heart is hardened.
14	God's message to Pharaoh.
19	The river is turned into blood; and the consequent distress of the Egyptians.

Exodus 7:19  (King James Version)
And the LORD spake unto Moses, Say unto Aaron, Take thy rod, and stretch out thine hand upon the waters of Egypt, upon their streams, upon their rivers, and upon their ponds, and upon all their pools of water, that they may become blood; and that there may be blood throughout all the land of Egypt, both in vessels of wood, and in vessels of stone.