This introduction presents an overview of the key concepts discussed in the subsequent chapters of this book. The book interrogates the relationship between violence, morality, and Jewish male circumcision. In recent times, bourgeoning movements appeared that scrutinise circumcision from numerous perspectives. A growing movement of activists protests all forms of non-medical circumcision. The book shows that violence – generally perceived in terms of an imposition or act of force imposed upon the self by an external other – typically displays characteristics of opposition and externality. Violence is something a person does to another, which requires a degree of separation and distinction. The book analyses how writing and authorship are treated in the works of Jacques Derrida and Judaic scholarship. It forges a new way of conceptualising the relationship between violence and circumcision.