Ohr ("Light" ; plural:
Ohros/Ohrot "Lights" ) is a central Kabbalistic term in the
Jewish mystical tradition. The analogy of physical light is used as a way of describing
metaphysical Divine emanations.
Shefa ("Flow" and its derivative,
Hashpoah "Influence" ) is sometimes alternatively used in Kabbalah, a term also used in Medieval
Jewish Philosophy to mean Divine influence, while the Kabbalists favour
Ohr because its
numerical value equals
Raz ("mystery"). It is one of the two main metaphors in Kabbalah for understanding
Divinity, along with the other metaphor of the human soul-body relationship for the
Sephirot. The metaphorical description of spiritual Divine creative-flow, using the term for physical "light" perceived with the eye, arises from analogous similarities. These include the intangible physicality of light, the delight it inspires and the illumination it gives, its apparently immediate transmission and constant connection with its source. Light can be veiled ("
Tzimtzum"-constrictions in Kabbalah) and reflected ("an ascending light from the Creations" in Kabbalah). White light divides into 7 colours, yet this plurality unites from one source. Divine light divides into the 7 emotional Sephirot, but there is no plurality in the Divine essence. The term
Ohr in Kabbalah is contrasted with
Ma'ohr, the "luminary", and
Kli, the spiritual "vessel" for the light.