Without the Hereafter, Justice Becomes a Delayed Falsehood: A Mixed-Methods Investigation of Eschatological Justice as a Philosophical, Psychological, and Sociological Necessity

This interdisciplinary study investigates the proposition that without belief in a hereafter (a post-mortem arena of divine judgment, reward, and punishment), the concept of justice is rendered fundamentally incomplete, performative, and ultimately false. Employing a mixed-methods framework that integrates philosophical analysis, quantitative sociological data, empirical psychological experimentation, and comparative theological exegesis, we demonstrate that the eschatological postulate functions as a necessary condition for the coherence of justice across multiple dimensions of human experience. The study draws upon (1) Kantian practical philosophy, which posits the immortality of the soul as a postulate of practical reason necessary for the highest good; (2) cross-cultural survey data from 87 countries demonstrating that belief in supernatural punishment independently predicts moral reasoning (Atkinson & Bourrat, 2011); (3) experimental evidence showing that priming thoughts of divine punishment reduces selfishness and increases prosocial behavior (White et al., 2019; Laurin et al., 2012); (4) macro-level criminological data indicating that belief in hell negatively predicts national crime rates whereas belief in heaven positively predicts them (Shariff & Rhemtulla, 2012); and (5) comparative theological analysis across Abrahamic, Dharmic, and philosophical traditions articulating the structural necessity of post-mortem judgment. We argue that the absence of eschatological accountability creates what Smilansky (2013) terms a "difficulty concerning compensation", a moral paradox wherein the gravest injustices become immune to rectification. The study's central finding is that the hereafter functions not merely as a religious consolation but as a logical precondition for justice to be thinkable as complete, non-performative, and morally serious. We conclude that secular attempts to ground justice without eschatology confront an ineliminable deficit that no immanent mechanism of human jurisprudence, however refined, can fully remedy. Keywords: eschatological justice, hereafter, practical reason, supernatural punishment, moral psychology, theodicy, post-mortem compensation, Kant's postulates, karma, divine judgment