When I watched this video of the dramatic volcanic eruption in Iceland, I thought of the prophecy of the fifth trumpet in Revelation 9. Verses 1 to 2 read:
“Then the fifth angel blew his trumpet, and I saw a star that had fallen to earth from the sky, and he was given the key to the shaft of the bottomless pit. When he opened it, smoke poured out as though from a huge furnace, and the sunlight and air turned dark from the smoke.
“This bottomless pit which [Satan]… unlocks is literally ‘the pit of the abyss.’ The word ‘abyss’ comes from roots meaning ‘without depth’ and so is properly translated ‘bottomless.’ It is apparently at the very center of the earth and so, in truth, has no bottom. Its boundaries in all directions are all ceilings; one cannot go ‘down’ in any direction. The pit of this abyss of Hades is apparently one of its imprisoning cells, and it is only this one to which Satan actually receives the key.
“But when he opens the gate, an amazing phenomenon occurs. Great billows of subterranean smoke pour forth on the earth, spreading around until it darkens the air worldwide, even dimming the sun’s light. This indicates that there must be somewhere on the earth an opening leading to a great shaft, leading down from the earth’s surface, through the crust, the mantle and the core, all the way to Hades and the pit itself. Man has never discovered this shaft because it is apparently blocked at its exit, but this does not mean it doesn’t exist. It has been ‘ordained of old’ by God and its walls are impregnable, from within or without, designed by the Creator to withstand all rupturing pressures, natural or supernatural. But when the key is finally turned, great billows of smoke, presumably from the earth’s internal heat and pressure, flow toward the surface and finally out to surround the earth itself.”