Every year on Sukkot, Jews around the world read the prophet Zechariah's vision of a future in which all the nations of the earth come up to Jerusalem. Not on Passover. Not on Yom Kippur. On Sukkot — the holiday Jewish tradition identifies with the Messianic era itself.

So what is the Messiah? For an idea this central to Judaism — woven into the daily prayers, enshrined as the 12th of Maimonides' 13 Principles of Faith, built into the structure of Jewish history and Jewish hope — most Jews would struggle to say what Mashiach actually is, what he has to accomplish, or how anyone would recognize the real one.

In part one of this two-part Sukkot and Simchat Torah special, Justin Pines sits down with Rabbi Ken Spiro — historian, author, and senior lecturer at Aish HaTorah in Jerusalem — for an hour that turns a vague idea into something you can actually hold.

Jewish Insights with Justin Pines airs on JBS (Jewish Broadcasting Service), available on Comcast, Spectrum, DirecTV, and Verizon. Watch more episodes at jbstv.org.

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