A few years ago, while outside the White House in Washington, D.C. with his public school class, Yakov Vinnik was approached by a Chabad rabbi who asked if he’d like to put on tefillin. This July, Yakov was in Warsaw, Poland, on a very different kind of trip, when he surprised himself by offering the mitzvah to a Jew he’d just met. Yakov is a sixteen-year-old competitive ballroom dancer from Atlanta, Georgia, where he’s also an active member of Chabad’s local CTeen youth chapter. This summer, he joined 250 other Jewish public school students for CTeen’s Heritage Quest, a traveling...