Kabbalah podcast
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You might be interested Peter Adamson's take on the origins of Kabbalah. Adamson is a scholar in the history of philosophy, and he takes up Kabbalah in episode 168 of his excellent podcast series, "The History of Philosophy without any Gaps."
historyofphilosophy.net/kabbala
Key soundbite: "The stuff makes Iamblichus look like Bertrand Russell."