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And the LORD said unto Moses, Say unto Aaron, Stretch out thy rod, and smite the dust of the land, that it may become lice throughout all the land of Egypt. Exodus 8:16
Trivia: Which of God's plagues on Egypt could the Pharaoh's magicians do?
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.