Name of the song/band? Please help.

hey guys! I need a little help. I went into a hevy metal store a couple of weeks yang lalu and I heard a small part of a song, but I don't how is it called nor what's the name of the band. All I remember was this verse: ''I am the Devil/ I am the one." If anda have any idea of what the song might be called, please leave an answer. Thank you!