Religious extremism presents an ideological perspective found in most major religions and is currently associated with various forms of religiously motivated acts of violence. A conceptual framework is adopted to study the warning features of religious extremism and apply it to case studies of Nigeria, Uganda, and the Central African Republic (CAR). The application of a religious jihadism model to Christianity provides a comparative basis for assessing Islamic radical jihadism, helping to understand religion as a security threat, with particular reference to Christian contexts and examples. Using extremist rhetoric and the mobilization of Christian rituals, members of religious groups attempt to renegotiate their position in the public space within a society from which they are excluded due to political, social, and economic dynamics based on their exclusion. This study finds no significant difference between Islamic jihad and Christian jihad, as each seeks to politically exploit religion for political ends.