Social inequalities are everywhere apparent. Poverty, discrimination, and an endless list of disparities are present in all societies. Christianity has at time contributed to such inequalities, and has also alleviated them through commitments to equal dignity, charity, social welfare, peace, and justice. For the Christian worldview, underlying the many social inequalities present in the world is a universal spiritual and theological reality to which every inequality can be traced. That reality is sin. One important implication of the doctrine of sin is the equality it creates. "All have sinned and fall short of the glory of God" (Rom. 3:23). This reality subverts social hierarchies that are based on the superiority of some over others, and places everyone on an equal playing field. To affirm that everyone is a sinner is to affirm that everyone, regardless of social status, is equally in need of God's grace. Sin is indeed the great equalizer, and the social implications are many.