This volume presents a comprehensive theological framework addressing the relationship between divine grace, human agency, and eschatological preparation. Drawing from detailed exegetical analysis of Scripture's warning passages and prophetic literature, the work argues that conditional perseverance is the position best supported by Scripture's internal logic, textual data, and structural coherence. The study employs the Triveritas epistemological framework—a three-dimensional analytical method assessing theological claims across Logical Validity, Structural Coherence, and Empirical Anchoring. I would like to acknowledge Vox Day, author of Veriphysics: The Treatise: The Failure of the Enlightened Mind and the Path Toward Truth and the inventor of the Triveritas methodology. Part One establishes conditional perseverance through a five-agent cumulative case (Satan, Adam, Judas, Christ, and the Apostles), demonstrating a consistent canonical pattern of genuine libertarian agency across the full spectrum of moral agents. Part Two develops the Two-Horizon Eschatological Framework, distinguishing covenantal fulfillment at AD 70 (Horizon 1) from final consummation at the Parousia (Horizon 2), providing the arena where conditional perseverance operates. Part Three explains the Triveritas methodology and applies it comparatively to five competing soteriological positions. The synthesis demonstrates that conditional perseverance is what makes eschatological warnings function as genuine warnings rather than predetermined mechanisms—with direct pastoral implications for how the church prepares for tribulation, counsels the doubting, and reads Scripture's warning passages.