Ancient Iranian religion was strongly connected. Beginning in the early 10th-century BC, the ancient Iranian religion was gradually displaced by Zoroastrianism, which contains many essential aspects of its predecessor. The sources on ancient Iranian religion, though limited, consist of textual and material sources. The textual sources are both Iranian and non-Iranian. An important Iranian source is the Avesta, which are Zoroastrian sacred scriptures made in the Avestan. This is considered the principal source of knowledge on ancient Iranian religions. It is a collection of several texts that seems to have been over a large span of time by a variety of authors. These
Religion in The Simpsons praying. William Romanowski, author of the book "Pop Culture Wars: Religion and the Role of Entertainment in American Life", noted that ""The Simpsons" is not dismissive of faith, but treats religion as an integral part of American life. Episodes that I’ve seen are not so much irreverent toward religion, but poke fun at American attitudes and practices." One episode that heavily features religion is "Bart Sells His Soul" (1995). While discussing "The Simpsons" treatment of religion in his "Drawn to Television" book, M. Keith Booker cites a scene from the episode where Milhouse asks Bart what religions have to gain