When Widengren was professor Sweden was a secularized country. A new curriculum for religious education was introduced in the schools. An overview over all religions substituted the confessional Lutheran education. As an excellent writer of popular science Widengren was anxious to propagate knowledge about the world religions, and especially the interdependence between them, among people in general. According to him, all aspects of Christianity existed before the Bible. He was convinced that the Dead Sea Scrolls proved the connection between Judaism and the original Christian religion. His ambition to demonstrate this connection might have tempted him to some exaggerations.