And when I shall put thee out, I will cover the heaven, and make the stars thereof dark; I will cover the sun with a cloud, and the moon shall not give her light. Ezekiel 32:7
The sun shall be turned into darkness, and the moon into blood, before the great and terrible day of the Lord come. Joel 2:31
The sun and the moon shall be darkened, and the stars shall withdraw their shining. Joel 3:15
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. Revelation 6:12
The speculations about blood moons (plural) being of prophetic significance are not valid. The darkening will be of the moon, the sun, and the stars. The opening of the 6th seal places this event in the future and after the rapture of the church. After Revelation chapter three, the church is no longer in view. She will be in heaven as the Bride.
So what could possibly be the cause of this darkening of the sun, moon, and stars? A cloud is mentioned, and the general darkening of the sky means that this is more than an eclipse.
A study of the potential eruption of the world's largest volcano could explain it. But this dormant volcano is in America. How could its eruption fulfill this part of prophecy which applies to Israel? As far as its range and extent, it is more than adequate. It will be far greater than Mt.Saint Helens or Pinatubo, and its ash, it is said, will darken the entire northern hemisphere.
Am I saying this will fulfill prophecy? No, just that its unique size could do that. It is valuable to hear what geologists predict about this vast eruption.
See the following: