Religion is an organized system of beliefs, ceremonies, and practices centered around a deity or supreme being. Most religions involve a belief in God or gods, codes of conduct, sacred stories and texts, rituals, and doctrines of salvation. The eight major world religions are Christianity, Islam, Hinduism, Buddhism, Judaism, Sikhism, Taoism, and Jainism. People practice religion for reasons such as culture, security, fellowship, and meaning in life.