Revelation 16:4-7

The third poured out his bowl into the rivers and springs of water, and they became blood. I heard the angel of the waters saying, “You are righteous, who are and who were, O Holy One, because you have judged these things. For they poured out the blood of holy ones and prophets, and you have given them blood to drink. They deserve this.” I heard the altar saying, “Yes, Lord God, the Almighty, true and righteous are your judgments.”