Rabbi Moshe Bryski, executive director/spiritual leader of Chabad of the Conejo in Agoura Hills, Calif., is the guest rabbi at Lubavitch on the Palisades in commemoration of the Lubavitcher rebbe’s 21st yahrzeit. On Shabbat morning at 10:30 a.m., he will talk about “The Power of Hope”; at noon, “The Legacy of the Lubavitcher Rebbe: The Infinite Value of the Individual Jew,” and at 7 p.m., “Climbing Your Mountain.” 11 Harold St. (201) 871-1152, .