Reports on a project using religious integration therapy delivered through intensive psychological services to create a therapeutic prison environment in Iran. 42 male inmates were classified according to personality characteristics based on assessment by the Clinical Analysis Questionnaire. Efforts were made to provide growth opportunities in the physical, economic, social, cognitive, psychological, and spiritual aspects of the inmates. Humanistically oriented milieu therapy, individual, group, and family therapy were some of the service delivery modes. Higher levels of meaning in life and lower depression levels were among the measurable changes. Immeasurable changes include greater feelings of community, empathy, understanding, and patience in both inmates and staff. (PsycINFO Database Record (c) 2016 APA, all rights reserved)