in some religions, there is only one deity, god. this is called monotheism. some monotheistic religions are the abrahamic religions (christianity, judaism, and islam), the bahá'í faith, and sikhism. in other religions there are many gods. this is polytheism. some polytheistic religions are hinduism, shinto, taoism, paganism, wicca and some variants of buddhism. some say that there is one god who can come in many forms, or that there is one god that is more powerful than the other gods.