The smells of barbecue and sweet Moroccan treats wafted through the air as I walked through Gan Sacher (Sacher Park) in Jerusalem in the days after Passover, during the years I was living in Israel. Thousands of people would spend the day there, commemorating Mimouna, the North African celebration that marks the end of the holiday. Most years, Mimouna is a giant public celebration in Israel. But this year is different. Each week, a member of the clergy offers their personal perspective on...