This discourse, taught on Shabbat of Chanukah by the Rebbe in 1966, focuses on the opening verse of the Haftorah from Zacharia 2:14. The discourse explains the spiritual power of Charity, Tzedaka, the power to reach down to the most needy and through that to be elevated to the highest levels.  Through this the negative is transformed into positive. This is also a key feature of Chanukah, in which the Chanukah lights illuminate the darkness, and reveal its implicit light.