Exodus 4:8-9
Exodus 4:8-9 NCV
Then the LORD said, “If the people do not believe you or pay attention to the first miracle, they may believe you when you show them this second miracle. After these two miracles, if they still do not believe or listen to you, take some water from the Nile River and pour it on the dry ground. The water will become blood when it touches the ground.”