Earthquakes: Symbolical

And I watched as the Lamb opened the sixth seal, and there was a great earthquake, and the sun became black like sackcloth of goat hair, and the whole moon turned blood red, …

And in that hour there was a great earthquake, and a tenth of the city collapsed. Seven thousand were killed in the quake, and the rest were terrified and gave glory to the God of heaven.

And there were flashes of lightning, rumblings, peals of thunder, and a great earthquake the likes of which had not occurred since men were upon the earth—so mighty was the great quake.

Then every island fled, and no mountain could be found.