This article uses the ailing body of King Charles XI of Sweden (1655–97) to explore how the king’s physicality was intimately connected not only with the nature of his kingship, its sacredness and legitimacy, but also with his personal faith. It shows that, while Charles’s body was exceptional in that it was the body of the king, at the same time it was reacting to illness and sin like any other Lutheran body. It also projected the body’s capabilities on a larger scale. In particular, the lethal putrefaction inside his belly came to play an important part in interpreting his kingship. These ideas had an impact that extended from his own stomach pains, via the anxiety of his suffering people, to the ending of absolute rule. By following the analogies that contemporaries drew from the king’s autopsy and his physicians’ notes, from sermons, official proclamations, diaries, weather reports, poetry, correspondence and prophecies, this article uncovers the powerful resemblances that connected Charles’s body with nature, his people, the realm and the divine. In the end it was the gathering of the cosmos into Charles’s body that paved the way for direct criticism of absolutism itself.