They usually suscribe to the idea that religion first started off as a primitive form of Animism or Spirit Worship, then evolved into polytheistic tribal/national religions, and then from one of these religions emerged Zoroastrianism which saw a gradual decrease in its number of gods until it eventually was transformed into a monotheistic religion, which in turn evolved into the well organized, theologically complex and philosophically deep monotheistic faiths of today such as Christianity, Judaism and Islam. | They usually suscribe to the idea that religion first started off as a primitive form of Animism or Spirit Worship, then evolved into polytheistic tribal/national religions, and then from one of these religions emerged Zoroastrianism which saw a gradual decrease in its number of gods until it eventually was transformed into a monotheistic religion, which in turn evolved into the well organized, theologically complex and philosophically deep monotheistic faiths of today such as Christianity, Judaism and Islam. |