From one of the very first weeks of Creation, in the Garden of Eden, Satan, the Devil, has tried to usurp the power of the Creator God. Satan is also called Lucifer, a name derived from the Latin words “Luc” meaning “light” and “ferre” meaning “bearer.”
A powerful angel was he created, the number one angel in heaven, the “bearer of the light.” But he was not happy with that and wanted to be God himself. So he rebelled, because of his pride, and has been rebelling against God and His created order ever since.
Though cast down from his former state, he continues to pass himself off as a pure and good being.