Persistent delusional disorders encompass a spectrum of conditions characterized by enduring delusions as the primary or most prominent clinical manifestation and they do not fit within the classifications of organic, schizophrenic, or affective disorders. A 42-year-old female with no prior of psychiatric history and presently unemployed, was brought to the Emergency Room of the Psychiatric Hospital in Sibiu by law enforcement, due to a presentation of delusional psychopathology, that included mystical and prejudicial delusions, dysphoria, episodes of irritability and delusional behavior. The onset of this pathological condition occurred approximately three years ago, following a pilgrimage to Jerusalem. During this journey, the patient reported experiencing significant perceptual alterations, such as visual illusions and hallucinations and also auditory hallucinations that were congruent with her delusional beliefs. These experiences were associated with the reinforcement of deeply held religious convictions, which had been nurtured and meticulously upheld within the patient's family. Over the course of this period, the patient lost her job, went through a divorce and encountered legal issues related to property damage and aggravated theft. Clinical and paraclinical investigations, along with a thorough review of the patient's medical history and observations from external sources, have led to the diagnosis of "Persistent delusional disorder - mysticalparanoid type." The progression of the delusional disorder has shown slow favorable outcomes, the patient's overall functioning still being maintained. Currently, the patient is under hospitalization in our department.