Iblis: The primary devil in the Koran.
I Ching: Pronounced ee-ching, translates literally as "The Book of Changes". It is a text used to provide guidance in life. The user puts a question to the I Ching and looks for answers relevant to their situation.
Illuminism: The process of attaining spiritual enlightenment.
Ishtar: The Babylonian goddess of love and fertility, equivalent of Venus or Isis.