"The O.T. prophets

 

are all the while rebuking their people for failing to see what God was saying to them in events whose meaning should have been perfectly clear...Century after century men have confronted life with unseeing eyes and unhearing ears. It seems sometimes that loud speakers are shouting forth the meaning of events but that men refuse to listen to their words."

Revelation 16:4-8

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, O Holy One,

    you who are and who were;

for they have shed the blood of your holy people and your prophets,

    and you have given them blood to drink as they deserve.”

And I heard the altar respond:

“Yes, Lord God Almighty,

    true and just are your judgments.”

The fourth angel poured out his bowl on the sun, and the sun was allowed to scorch people with fire.