Exodus 4:8-9

8And it shall come to pass, if they will not believeH539 thee, neither hearken to the voiceH6963 of the firstH7223 signH226, that they will believeH539 the voiceH6963 of the other signH226.

9And it shall come to pass, if they will not believeH539 alsoH1571 those twoH8147 signsH226, neither hearken unto thy voiceH6963, that thou shalt takeH3947 of the waterH4325 of the riverH2975, and pourH8210 [it] on the dryH3004 [landH3004]; and the waterH4325 that thou takest out of the riverH2975 shall becomeH1961 bloodH1818 upon the dryH3004 [landH3004].