The Third Bowl of Revelation

Revelation 16

4 The third angel poured out his bowl on the rivers and springs of water, and they became blood.

5 Then I heard the angel in charge of the waters say:
   "You are just in these judgments,
      you who are and who were, the Holy One,
      because you have so judged;
 6 for they have shed the blood of your saints and prophets,
      and you have given them blood to drink as they deserve."

 7 And I heard the altar respond:
   "Yes, Lord God Almighty,
      true and just are your judgments."