Francis Müller investigates a Swiss and a Ghanaian charismatic evangelical community in the Zurich metropolitan area using an ethnosemantic approach. A central element that emerges in both communities is conversion and the associated self-transformation, which is linked to different cultural themes in each community. The sought-after radical self-transformation is risky because it implies a break with habits and the previous way of life. Different techniques and normative identities are conveyed in the two communities, demonstrating how to cope with this discontinuity and how to live in a modern, secular world. The author thus contributes to sociological research on conversion.