To illuminate prayer as a "resonance event" means to understand it not as an active execution in the usual sense, but as something that can surprisingly occur or elude us. The guiding metaphor of "resonance" also refers to the responsiveness and sensuality of praying. It does not begin with oneself, but comes from elsewhere. And it concerns not only the human spirit but the person as an embodied self. The contributions in this volume explore these resonance aspects in relation to the field of contemporary spiritual care. Even in secular clinical contexts, diverse prayer practices can be observed. They have a peculiar relationship with the therapeutic and palliative treatments that accompany them. For prayer does not treat but responds to the absurdity of illness, disability, and death.