See Gershom G. Scholem, Jewish Gnosticism, Merkabah Mysticism, and Talmudic Tradition (New York: Jewish Theological Seminary, 1960), p. 38; and David J. Halperin, The Faces of the Chariot: Early Jewish Responses to Ezekiel’s Vision (Tübingen: Mohr, 1988), p. 26.
