Picture Study Bible with Maps and Background Information
exodus 7:19 Then the LORD said to Moses, "Say to Aaron, 'Take your staff and stretch out your hand over the waters of Egypt, over their rivers, over their streams, and over their pools, and over all their reservoirs of water, that they may become blood; and there shall be blood throughout all the land of Egypt, both in [vessels of] wood and in [vessels of] stone.'"