the story
In Heaven, his name was Lucifer (light bearer), he was God's most beautiful angel. But even in this position, Lucifer was not content. He took inordinate pride in his own angelic nature - he was overly pleased with his supernatural gifts, his immortality, his closeness to God. And eventually, his pride became so great that he was angered at having a master of any kind, even God. He wanted to control his own destiny and so he rebelled against God and all of Heaven. He threw up his banner, recruited his army of equally discontented angels and waged war against God for supremacy. To lead his own troops, God appointed the archangel Michael as his field commander: "And there was war in heaven: Michael and his angels fought against the dragon; and the dragon fought and his angels, and prevailed not; neither was their place found any more in heaven. And the great dragon was cast out, that old serpent, called the Devil, and Satan, which deceived the whole world; he was cast out into the earth, and his angels were cast out with him ... Therefore rejoice, ye heavens, and ye that dwell in them. Woe to the inhabitors of the earth and of the seal for the devil is come down unto you, having great wrath ..." ( - - - Revelation 12: 7-9, 12) Thus having fallen from Heaven, Lucifer was no more -- he had a new name, Satan (the Hebrew word for "adversary") and his new domain was Hell.