This thesis addresses the challenges of small-group catechesis (5–10 participants) within the Transylvanian Reformed context, characterized by declining youth participation and fragile faith commitment in the context of the Romanian Reformed congregations which comprise 2.38% of the population according to 2021 census. The central research question examines how Motivational Interviewing (MI) can be applied in catechetical settings so that faith commitment and ecclesial integration emerge from intrinsic conviction rather than external obligation. The theoretical framework integrates congregational pedagogy, Elaine B. Johnson's Contextual Teaching and Learning Theory (CTL), and the MI model developed by Miller and Rollnick. Theological evaluation rests on ecclesiological, christological, and ethical foundations. As its primary outcome, the thesis develops the concept and cyclical process model of motivation-focused catechesis, illustrated through practical catechism lesson plans and Bible study guides.