Isaiah 50:3

And the LORD said unto Moses, Stretch out thine hand toward heaven, that there may be darkness over the land of Egypt, even darkness which may be felt.

He made darkness his secret place; his pavilion round about him were dark waters and thick clouds of the skies.

Now from the sixth hour there was darkness over all the land unto the ninth hour.

And I beheld when he had opened the sixth seal, and, lo, there was a great earthquake; and the sun became black as sackcloth of hair, and the moon became as blood;