The Rebbe explains the meaning of 'Kol Yisrael Areivim Zeh Bazeh,' emphasizing responsibility, sweetness, and interconnectedness among Jews. He urges giving spiritual charity generously, inspiring others to Torah and mitzvos, and also stresses personal Torah study for one's own soul.
https://www.torahrecordings.com/rebbe/igroskodesh/004/cheshvon/789