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By these three was the third part of men killed, by the fire, and by the smoke, and by the brimstone, which issued out of their mouths. Revelation 9:18
Trivia: Who taught the church at Thyatira to commit fornication?
In the Bible, the firmament is a solid, dome-shaped structure in which the stars were placed. It separated the waters below from the waters above. Windows in the firmament were opened whenever it rained.