Revelation 16:4-6

American Standard Version

⁴ And the third poured out his bowl into the rivers and the fountains of the waters; ^[a]and ^[b]it became blood. ⁵ And I heard the angel of the waters saying, Righteous art thou, who art and who wast, thou Holy One, because thou didst thus ^[c]judge: ⁶ for they poured out the blood of saints and prophets, and blood hast thou given them to drink: they are worthy.