It requires power, and collaboration is the primary source of power. So there are good guys and bad guys. The good guys are also prevailing and supporting the sin. The bad guys are victims, who are vulnerable persons. They lash back, which is supposedly where the sin begins.
Sin divides minds into two halves.
All that is supportive is good and creates positive reactions. All that is opposing is bad and creates negative reactions. It is only possible to be jealous of enemies, because threat only comes from enemies. Enemies are the victims of sin, because they react against it. The victims are vulnerable persons, because only they can be prevailed against.