This document discusses different types of religions. It defines religion as a person's relation to what they consider holy or spiritual. Religions are then classified based on the number of gods believed in, including monotheism, polytheism, atheism, and pantheism. Early forms of religion discussed are animism and totenism. The four largest religions today are outlined as Christianity, Islam, Buddhism, and Hinduism, comprising over 68% of the world's population between them.