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In the Christian world... it is believed that angels were created at the beginning, and that heaven was formed of them; and that the Devil or Satan was an angel of light, who, becoming rebellions, was cast down with his crew, and that this was the origin of hell.

Emanuel Swedenborg (2012). “Last Judgment: Are We Living in the End of Days?”, p.10, Simon and Schuster
In the Christian world... it is believed that angels were created at the beginning, and that heaven was formed of them; and that the Devil or Satan was an angel of light, who, becoming rebellions, was cast down with his