35. Obsession and possession by evil spirits seem to have been very common in Judea in the time of Jesus, which gave him the opportunity of curing many. The undeveloped spirits had no doubt invaded this country, causing an epidemic of the disease (chap. XIV, n° 49).
Without being epidemic, the obsession of individuals is extremely frequent, and presents itself under various aspects which a profound knowledge of Spiritism makes easily recognizable. The health of the individual is often sadly affected by it, either by aggravating organic affections or causing them. Obsessions will some day be inevitably ranged among pathological causes requiring by their special nature special curative means. Spiritism, by making known the cause of the evil, opens a new way for the art of curing, and furnishes to science the means of success where it fails only by a lack of knowledge of the original cause of the evil (“The Mediums Book,” chap. 23).