Mendel Glatt is addressed in correspondence from the Lubavitcher Rebbe as a respected member of the Chassidic community, recognized for his involvement in communal and spiritual activities. The Rebbe refers to him with honorific titles, indicating his standing and dedication within his community.
The Lubavitcher Rebbe's letter to Mendel Glatt, dated the 5th of Marcheshvan, 5711 (1950), expresses appreciation for receiving regards through a mutual acquaintance, Rabbi Yosef HaLevi Weinberg. The Rebbe uses this opportunity to elaborate on the teaching of 'Kol Yisrael Areivim Zeh Bazeh'—that all Jews are responsible for one another—highlighting its meanings of sweetness, interconnectedness, and responsibility. He draws a parallel between this concept and the insurance business, emphasizing that such responsibility is even greater in spiritual matters.
The Rebbe conveys the teachings of his father-in-law, the Previous Rebbe, stressing the importance of providing 'spiritual charity' to those lacking in Torah knowledge within one's community. He encourages Mendel Glatt to organize public Torah study sessions and to influence others to draw closer to Torah and mitzvos, describing these efforts as vessels for receiving blessings both materially and spiritually. The Rebbe also underscores the necessity for every Jew to set aside regular times for Torah study, both in the revealed and inner dimensions, including the study of Chassidus.
The tone of the letter is warm and encouraging, with the Rebbe expressing hope to hear good news about Mendel Glatt's continued efforts in these areas and extending blessings for success in both material and spiritual matters.