Tanin'iver (compd. of Heb. תַנִין, "dragon" + עִוֵר, "sightless" — the "blind dragon") is an evil cosmic entity described in

Kabbalistic Kabbalah or Qabalah ( ; , ; ) is an esoteric method, discipline and school of thought in Jewish mysticism. It forms the foundation of mystical religious interpretations within Judaism. A traditional Kabbalist is called a Mekubbal (). Jewi ...

writings, such as the '' Treatise on the Left Emanation'' and the ''

Zohar The ''Zohar'' (, ''Zōhar'', lit. "Splendor" or "Radiance") is a foundational work of Kabbalistic literature. It is a group of books including commentary on the mystical aspects of the Torah and scriptural interpretations as well as material o ...

''. He is the steed of

Lilith Lilith (; ), also spelled Lilit, Lilitu, or Lilis, is a feminine figure in Mesopotamian and Jewish mythology, theorized to be the first wife of Adam and a primordial she-demon. Lilith is cited as having been "banished" from the Garden of Eden ...

, so he is considered a mechanism by which evil is activated. Though Tanin'iver is

castrated Castration is any action, surgical, chemical, or otherwise, by which a male loses use of the testicles: the male gonad. Surgical castration is bilateral orchiectomy (excision of both testicles), while chemical castration uses pharmaceutical ...

(echoing a fable about the Yetzer ha-Ra), he is still the catalyst for the coupling of Lilith with

Samael Samael (; , ''Sammāʾēl'', "Venom of God"; , ''Samsama'il'' or , ''Samail''; alternatively Smal, Smil, Samil, or Samiel) is an archangel in Talmudic and post-Talmudic tradition; a figure who is the accuser or adversary (Satan#Judaism, Satan ...

, a union that brings pestilence into the world.

References

Demons in Judaism Dragons {{legendary-creature-stub