Aryeh Green and Yosef Abramowitz were sipping tea in a Bedouin tent last year in Sde Boker, a kibbutz in Israel\’s Negev desert, when they had an idea. Participants at a conference of Kol Dor, an organization that seeks to revitalize Jewish activism and unity across the globe, the two were discussing how the group could promote Jewish identity and peoplehood.