Occultism is the study of occult. It can involve such subjects as magic (alternatively spelled and defined as magick), extra-sensory perception, astrology, spiritualism, numerology and lucid dreaming. There is often a strong religious element to these studies and beliefs, and many occultists profess adherence to religions such as Gnosticism, Hermeticism, Satanism, Thelema, and Neopaganism. While Christianity, Judaism, Hinduism, Buddhism, and Islam are generally not considered as occult, some of their modern interpretations can be, such as the interpretation of Hinduism within Theosophy or the various occult interpretations of the Jewish Kabbalah.