The following essay aims to examine the use of lyrical themes linked to religion. The music styles in focus in this study are death metal and melodic death metal in Sweden. The study is based on 14 Swedish bands that are or have been active during the last 30 years. In this study I ask which themes connected to religion are used in the lyrics from the middle of the 80’s till today and how the use of themes changes during this time period.       My hypothesis was that since metal’s function and purpose is to break boundaries and test the social limits the lyrics inevitably must change over time to continue to draw attention and provoke. The lyrics have been studied with qualitative text analysis and put in a timeline divided in four eras to see the changes over time and how they are expressed. Each era is divided into different categories and themes that are found in the lyrics.       This study shows that the lyrics in the chosen genres connected to religion change over time, in accordance with my hypothesis. The main lyrical themes are Satanism, Anti-religion and religion critics, Christian themes, Esoterism and mysticism and Mythology. The lyrical themes have changed from dealing primarily with Satanism and anti-Christianity/religion in the 80’s and early 90’s to more complex lyrics about esoterism, mysticism, spiritism, and mythology today.