One difficult situation that Christians in prison must overcome is their past. The vast majority are in prison because they broke the law. However, in the prison situation they are constantly reminded of their past. A past, incidentally, that God says has been totally forgiven through faith in Jesus Christ. The guilty feelings are often compounded by a system that has a tendency to strip away self-esteem.
Prisoners are suspect, just because they are prisoners.
Prison employees play as many games as prisoners and often the system can pull strings just to prove that it can. Self-doubt plague many. Their motives are suspect. Or, it is implied that they are playing some religious game to get out sooner. The Christian in a prison setting must have a strong belief system to overcome the daily assault on his or her faith.