The influence of Judaism and Jewish culture on the Western world goes back as far as the 4th century, when Christianity became the official religion of the Roman Empire. For this reason, though the Jews were frequently depicted in Medieval fiction in an unfavourable light, they were sometimes seen by Europeans as the bearers of wisdom and mystical knowledge. This view was prominent in Italy during The Renaissance, when numerous philosophers and mystics, including Pico della Mirandola and Johann Reuchlin, had an interest in Kabbalah.
In the subsequent centuries, the trope declined in prevalence due to increasing anti-Semitic tendencies within Europe, but rose to prominence again in the nineteenth century in the light of romanticized Orientalism. It reached another peak in popularity after the Second World War, when derogatory portrayals of Jews were no longer considered acceptable, and the Jewish characters were usually depicted sympathetically.
Compare Magical Negro, Magical Romani, Magical Asian, and Magical Native American; contrast Greedy Jew, another century-old Jewish stereotype in Western culture. Subtrope of Magical Minority Person. To qualify for this trope a character needs to serve as a mentor figure to another non-Jewish (or less traditional) character.
- The Rosenthal family from A Certain Scientific Accelerator are a centuries-old dynasty of Jewish mages specializing in necromancy, who for generations have sought to recreate the perfect, primordial human of kabbalistic lore (the Adam Kadmon) using a combination of Western and Eastern magical arts. Esther Rosenthal, the current head of the family, serves as a deutragonist for the series.
- The true identity of Caster of Black from Fate/Apocrypha is Avicebron, better known as Solomon Ibn Gabirol, a famous medieval Jewish poet who is said to have dabbled in Kabbalah and created a Golem. Very much a case of Historical Villain Upgrade, as the historical poet and philosopher who has composed some of the most beautiful, heartbreaking, inspiring Jewish poetry of his age is turned into a maniacal, misanthropic sorcerer so obsessed with creating a perfect golem he betrays and sacrifices his own Master.
- Independence Day: David's father is a rabbi whose primary purpose in the story is to provide a source of wisdom (and Comic Relief) for the characters and audience. In fact, it's his statement (advising his son not to catch a cold) which is the catalyst that sparks David to create the computer virus that wins the war for humanity.
- Judah Loew ben Bezalel aka the Maharal of Prague, an important Jewish mystic and philosopher of the 16th century who, according to a legend, created the Golem of Prague.
- The Decameron, written during the Renaissance, has two characters of this sort. First, there is the wise Jew Abraham who travels to the Vatican and criticizes the corruption there, essentially becoming the author's mouthpiece. Second, there is the Jewish money lender Melchisedech, who is asked by a Sultan which of the three Abrahamic religions (Judaism, Christianity, or Islam) is true, and answers with a parable about the three rings, one of which is precious and the other two are fake, but nobody knows which is which.
- The Wandering Jew pops up in one chapter of The Monk to rescue Raymond and Agnes from the ghost of the Bleeding Nun, then disappears after delivering some cryptic warnings to them.
- Benjamin from A Canticle for Leibowitz, a quirky but wise Jewish Hermit Guru who may or may not be the Wandering Jew.
- Gustav Meyrink played with the trope in several of his works:
- Schemajah Hillel from The Golem, who becomes the protagonist's mentor in walking the path of mysticism, and his wise and beautiful daughter Miriam. Interestingly, a Greedy Jew (the junk dealer Aaron Wassertrum) is also present in the novel.
- Chidher Green from The Green Face, the mysterious old man who also becomes the protagonist's spiritual guide, and who eventually turns out to be the Wandering Jew.
- Emmanuel from Pelagia and the Red Rooster, an Ambiguously Jewish Eccentric Mentor with supernatural powers who makes people realise their flaws and change for the better.
- The Elenium has a Fantasy Counterpart Culture called the Styrics, who are a race of magicians who basically mentored the Elenes in the ways of magic and mysticism. In particular, the protagonist Sparhawk was taught by the Styric priestess Sephrenia.
- Fargo Season Three has Paul Marrane, a mysterious, Ambiguously Jewish traveling businessman who gives sage advice to other characters and frequently references Judaism and the Hebrew Bible. He is strongly implied to be the Wandering Jew.
- Al "Pops" Solomon on The Goldbergs is the most unambiguously Jewish character; he is the least insane family member and quite often gives good wise advice to daughter Beverley, son-in-law Murray, and to his three grandchildren Erica, Barry and Adam
- Nathan the Wise by Gotthold Ephraim Lessing is about the wise Jewish merchant Nathan who helps a Christian Templar and a Muslim Sultan bridge the gap between their religions.
- In Castlevania, the Speakers are a Fantasy Counterpart Culture, being a nomadic religious minority who're persecuted and scapegoated by a Christian majority. Their other main feature is keeping enormous amounts of lore via oral histories. The most prominent Speaker characters are The Elder, who more or less sets Trevor Belmont on the way to fighting Dracula, and Sypha, a Black Magician Girl with an extensive knowledge of magic.
- In The Simpsons, the father of Krusty the Clown, a rabbi, offers homespun wisdom to Bart and Lisa.