No, people with OCD can have uncontrolled, instrusive blasphemous thoughts , particularly when in Church or when praying. They don’t commit blasphemous acts or say blasphemous things, they have a torrent of unwanted, distressing blasphemous thoughts being screamed at them in their head . The more they try to argue with their thoughts, the more persistent they become. They believe they are guilty of grave evil or are afraid they are—did they want these thoughts?, and try harder and harder to control their thoughts, but that makes everything worse.