Article one surveys the world tree across Norse, Siberian, Mesoamerican, Indian and biblical material. Jewish mysticism supplies a further and highly elaborated tree that belongs in the same comparative category and is absent from that survey.
The Kabbalistic Etz Chaim, the Tree of Life, diagrams ten sefirot, divine emanations running from Keter at the crown to Malkhut at the base, connected by paths, through which the infinite and unknowable Ein Sof is understood to manifest into a knowable, structured cosmos and, on the same diagram, into the structure of the human soul. Unlike Yggdrasil or the ashvattha, it is not primarily a narrative image with roots, trunk and branches populated by named creatures; it functions as a theological diagram of emanation, closer in purpose to Meru's cosmological map than to a mythic tree with a story attached, though it keeps the tree's vertical, level-connecting logic throughout.
Its reach outside Judaism is considerable and has not always been welcome to those who transmit it as a living tradition. Christian Cabala in the Renaissance and Hermetic Qabalah in later Western esotericism, the Golden Dawn prominent among the transmitting bodies, adopted the diagram and reworked it for their own systems, often without the textual tradition, the halakhic context, or the years of preparatory study that traditional Kabbalistic transmission requires. Contemporary scholars of Jewish mysticism generally distinguish sharply between Kabbalah as a specific, textually grounded Jewish discipline and the Western esoteric systems that borrowed its central diagram while discarding most of what originally gave it meaning.