Members of the Illuminati are free to follow any religious faith they choose, as long as such belief does not conflict with the preservation of the human species.
For anyone to claim that the Illuminati is affiliated with a religious belief — be it God or Satan, Baphomet or Baal — undermines the very purpose of our independence from human divisions. We neither accept nor deny any deity and hold none to be higher than any other.
For more information, read Illuminatiam: chapter 8.