Revelation 16:4-7 MSG

4 The third Angel poured his bowl on rivers and springs: The waters turned to blood.
5 I heard the Angel of Waters say, Righteous you are, and your judgments are righteous, The Is, The Was, The Holy.
6 They poured out the blood of saints and prophets so you've given them blood to drink - they've gotten what they deserve!
7 Just then I heard the Altar chime in, Yes, O God, the Sovereign-Strong! Your judgments are true and just!