Revelation 16:4-6
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.”