**Abstract**

Cognitive-behavioral therapies (CBT) have been disseminated worldwide. This therapeutic approach is being considered some of the best empirically supported treatments for a large variety of psychological disorders. The core tenet of CBT is to restore mental health and promote psychological well-being by focusing on cognitive dysfunctional patterns that cause emotional distress and maladaptive behaviors. First, a general view of the basic principles and origins of cognitive-behavior therapies constitute the basis on which the chapter is built. Thereafter, a more in-depth discussion on specific forms of CBT, namely cognitive therapy (CT) and rational-emotive behavior therapy (REBT) provides further support for the integration of religion and psychological intervention. Next, a thorough analysis of the theoretical premises of this integration and the ways in which religious beliefs and psychological mechanisms merge in practice is provided. Finally, the REBT conceptualization, techniques, and strategies are illustrated in a practical situation; here, the relationship between religious beliefs and practices on the one hand, and irrational beliefs, dysfunctional emotions, and maladaptive behaviors, on the other hand, is easy to observe. The example provided aptly illustrates the many ways in which REBT can incorporate religious principles, beliefs, and practices; all of them, advocating for the harmonious relationship between Christian values and REBT.

**Keywords:** cognitive behavior therapy, Christian counseling, religious beliefs and practices, religious clients, case study
