Religion has several positive effects on the life of the prisoner, helping him to cope with prison conditions and can significantly reduce the problems associated with imprisonment. In our qualitative research, we asked long-term prisoners in 3 prisons in Hungary, using a semi-structured interview method, about their perceptions of religiosity, the impact of religion on their life management, and the role they predict religion to play after the end of their sentence. Following a review of the literature, three hypotheses were put forward. We hypothesized that imprisonment is a crisis in the individual’s life that makes him or her open to religious values; religiosity influences the individual’s values and, through them, his or her attitude towards world phenomena; religious prisoners are a lower security risk. The hypotheses are confirmed. Beyond the reintegration of prisoners into society, the analysis of the interviews reveals that some of the narratives not only reflect a desire for reintegration but also a desire to serve as a goal.