This paper explores the intriguing parallels between Kabbalistic mysticism and modern string theory, focusing on their shared themes of hidden structures, vibration, multidimensionality, and numerical harmony. Drawing on concepts such as Ein Sof (the Infinite), the four Kabbalistic worlds, and the Tree of Life (Sefirot), the essay highlights how these ideas resonate with the mathematical frameworks of string theory. A dedicated section introduces Gematria as a bridge between symbolic numerology and scientific constants, showing how Hebrew words and their numerical values (e.g., Or [light] = 207, Ein Sof [infinity] = 127) may conceptually align with string theory’s constants and vibrational structures. The integration of Gematria extends the dialogue between mystical symbolism and physical law, suggesting that both traditions converge on a vision of reality as layered, vibrational, and unified. By placing Kabbalah, Gematria, and string theory in dialogue, this work proposes that ancient mystical insights and cutting-edge physics are not oppositional but complementary — each offering a unique map of the universe’s hidden order.