Abraham Joshua Heschel revolutionized modern Jewish theology by replacing traditional Greek metaphysical concepts with a dynamic Biblical framework centered on divine-human relationships. Following his death in 1972, his scholarly legacy reveals a comprehensive theological system that spans from Biblical prophecy to Hasidic mysticism while maintaining remarkable internal coherence despite its aphoristic style. Through three critical criteria—comprehensiveness, consistency, and relevance—Heschel's work emerges as a radical departure from conventional theological thought, reconceptualizing God as the "Most Moved Mover" rather than Aristotle's "Unmoved Mover." His methodological breakthrough lies in making ancient Jewish teachings accessible to modern audiences through experiential pathways, encouraging direct encounters with divine presence through nature, Scripture, and sacred actions. Heschel's "depth theology" successfully bridges classical Jewish sources with contemporary philosophical concerns, offering a coherent worldview that addresses modern existential fragmentation while maintaining awareness of both divine presence and hiddenness in human experience.