The Best Argument for God: Volume I: Foundations

Randal Rauser's The Best Argument for God: Volume I: Foundations represents a methodologically innovative approach to contemporary natural theology, eschewing traditional cumulative case arguments in favor of what he terms a "progressive theistic argument." Rather than presenting multiple independent arguments for God's existence that collectively build probability, Rauser develops a single, integrated argument that proceeds through carefully structured stages, each building necessarily upon the previous.

The work begins by establishing foundational epistemological principles, particularly addressing the relationship between rationality, evidence, and belief formation. Rauser engages critically with both classical evidentialist approaches and reformed epistemology, carving out a middle position that acknowledges the legitimacy of properly basic beliefs while maintaining the importance of evidential considerations. His treatment of defeaters and undercutting evidence demonstrates sophisticated engagement with contemporary epistemology, particularly the work of philosophers like Alvin Plantinga and William Alston.

Central to Rauser's project is his reconceptualization of what constitutes the "best" argument for God. He rejects purely probabilistic assessments in favor of a multidimensional evaluation that considers explanatory power, existential resonance, and practical implications. This approach allows him to address not merely the question of God's existence but also the attributes and nature of the divine being under consideration. The argument proceeds from minimal theistic commitments to increasingly specific theological claims, though this first volume focuses primarily on establishing the foundational framework.

The work engages substantively with contemporary atheistic philosophy, particularly the writings of Graham Oppy, J.L. Mackie, and Paul Draper. Rauser demonstrates careful attention to the strongest versions of naturalistic objections, avoiding strawman representations while building his positive case. His treatment of the problem of divine hiddenness and initial discussions of evil show particular philosophical sophistication.

Methodologically, Rauser combines rigorous analytical philosophy with accessibility, making complex arguments comprehensible without sacrificing precision. His use of thought experiments and careful conceptual analysis reflects the influence of contemporary modal logic and possible worlds semantics. The work's significance lies not only in its specific arguments but in its attempt to reshape how natural theology is conducted in the 21st century, moving beyond the limitations of both classical proofs and piecemeal cumulative cases toward a more unified and philosophically robust approach to theistic argumentation.