Tanin'iver (compd. of
Heb. תַנִין, "dragon" + עִוֵר, "sightless" — the "blind dragon") is an evil cosmic entity expounded in the
kabbalistic
Kabbalah ( he, קַבָּלָה ''Qabbālā'', literally "reception, tradition") is an esoteric method, discipline and Jewish theology, school of thought in Jewish mysticism. A traditional Kabbalist is called a Mekubbal ( ''Məqūbbāl'' "rece ...
teachings of
Moses Cordovero and subsequent writings based on his system. He is the steed of
Lilith, so he is considered a mechanism by which evil is activated. Though Tanin'iver is
castrated (echoing a fable about the
Yetzer ha-Ra), he is still the catalyst for the coupling of Lilith with
Samael, a union that brings pestilence into the world.
References
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Demons in Judaism
Dragons