Revelation 16:4-6

Webster(i) 4 And the third angel poured out his vial upon the rivers and fountains of waters; and they became blood. 5 And I heard the angel of the waters say, Thou art righteous, O Lord, who art, and wast, and wilt be, because thou hast judged thus. 6 For they have shed the blood of saints and prophets, and thou hast given them blood to drink; for they are worthy.