What does the burning mountain in the second trumpet refer to?
The burning mountain cast into the sea in the second trumpet refers to a great cosmic disturbance, likely great meteorites coming down and striking the earth. This event causes a third part of the sea to become blood, matching the judgment described in the second trumpet.
In the second trumpet, the second angel sounds and a great mountain burning with fire is cast into the sea, turning a third part of the sea to blood. Les explains that this may not unfold in hours but likely over days or weeks as the events move closer to the end. He connects it with Old Testament prophecy about great disturbances in the cosmos, suggesting great meteorites coming down and hitting the earth. This follows the first trumpet's hail and fire mingled with blood and fits the pattern of escalating judgments.