Exodus 7:17-20

17ThusH3541 saith Jehovah: In this shalt thou knowH3045 that I am Jehovah — behold, I will smite with the staffH4294 that is in my handH3027 upon the waterH4325 which is in the riverH2975, and it shall be turnedH2015 into bloodH1818.

18And the fishH1710 that is in the riverH2975 shall dieH4191; and the riverH2975 shall stinkH887; and the EgyptiansH4713 shall loathe to drinkH8354 the waterH4325 out of the riverH2975.

19And Jehovah saidH559 to MosesH4872, SayH559 unto AaronH175, TakeH3947 thy staffH4294, and stretchH5186 out thy handH3027 upon the watersH4325 of the Egyptians — upon their streams, upon their riversH5104, and upon their pondsH98, and upon all their reservoirs of waterH4325, that they may becomeH1961 bloodH1818; and there shall beH1961 bloodH1818 throughout the landH776 of EgyptH4714, both in [vessels of] woodH6086 and in [vessels of] stoneH68.

20And MosesH4872 and AaronH175 did soH3651, as Jehovah had commandedH6680; and he liftedH7311 up the staffH4294, and smote the watersH4325 that were in the riverH2975 before the eyesH5869 of PharaohH6547, and before the eyesH5869 of his bondmen; and all the watersH4325 that were in the riverH2975 were turnedH2015 into bloodH1818.