Contagion

Scripture teaches that while sickness and evil are contagious, holiness is not Haggai’s warning makes clear that impurity spreads easily, but righteousness never transfers by proximity. Yet many parents and pastors still imagine that morally vulnerable people can lift up corrupt companions, when in reality the downward pull of sin is far stronger than the upward pull of virtue. Rousseau lecturing a prostitute from her bed is the perfect picture of this folly. Evil spreads because destruction is easier than construction: a beautiful house can burn in an hour, but takes weeks to build. Likewise, moral collapse is swift, while righteousness grows only through discipline, faith, and separation from corruption. Godliness requires training like an athlete, daily exercise in holiness, and careful boundaries to avoid contamination, because character does not develop by contagion but by sowing, tending, and waiting for the slow, sure harvest promised to the righteous.