We’re told in the Old Testament that God, in eternity past, created a wise, brilliant, and beautiful angel who was known as Lucifer. We’re told in Ezekiel 28 and Isaiah 14 that this angel became proud because of his stellar good looks and sought to ascend to the throne of God himself. He wanted to be like God, to reign as the sovereign king. He wanted to be God.
As a result of his rebellion against God, Lucifer and his band of rebellious, free-willed followers were cast out of heaven forever. Even though he aspired to be, Satan is not God. He is not self-existent, not sovereign, omnipotent, omniscient, or omnipresent – but he is the ultimate liar and schemer. 2 Corinthians 11:14