Revelation 16:4-6

Amplified Bible, Classic Edition

⁴ Then the third [angel] emptied out his bowl into the rivers and the springs of water, and they turned into (became) blood.^(A)

⁵ And I also heard the angel of the waters say, Righteous (just) are You in these Your decisions and judgments, You Who are and were, O Holy One!

⁶ Because they have poured out the blood of Your people (the saints) and the prophets, and You have given them blood to drink. Such is their due [they deserve it]!^(B)