Exodus 4:9 (1611 KJV)
From Textus Receptus
Exodus 4:9 (1611 KJV) And it shall come to passe, if they will not beleeue also these two signes, neither hearken vnto thy voice, that thou shalt take of the water of the riuer, and powre it vpon the drie land: and the water which thou takest out of the riuer, shall become blood vpon the drie land.