19. The union and affection which can exist between relatives is an indication of former sympathies which have brought them together. This is why, when referring to someone whose character, tastes, and inclinations hold no similarity to other members of the same family, it is customary to say that they do not belong to that family. When saying this, the truth is expressed far more profoundly than suspected. God permits that in certain families these Spirits, who are uncongenial or strangers to each other, reincarnate with the dual purpose of serving as a test for some members of that family, and as a means of progress for others. In this manner, due to contact with good Spirits and the general care dispensed to them, the bad or wicked Spirits get better, little by little Their characters grow milder, their habits become more refined and their aversions dissipated. This is how the various fusions of different categories of Spirits are accomplished, as is done with different races and peoples on the planet.