Another person who was doing miracles in Samaria, but by satanic power, was Simon, whom people have sometimes called Simon Magus. Magus is the transliteration of the Greek word magos meaning magician or sorcerer. The magic that he did was not sleight of hand deception but sorcery: the ability to control people and or nature by demonic power. This ability had made Simon very popular, and he had encouraged people to think that he was a great power whom God had sent. [1][source]
"As the counterfeit of the true, these false prophets were among the most dangerous enemies of Christianity; and the distinction between the true and the false, between religion and spiritualism, had to be sharply drawn once for all." [2][source]