The Baal Shem Tov's letter: the importance of studying Chassidus

The importance of studying Chassidic philosophy, in order to hasten Moshiach's coming.

The Baal Shem Tov writes in a letter, to his brother-in-law:
On Rosh HaShanah of the year 5507/1746, his soul ascended to the heavenly realms; where he was granted the privilege of entering the palace of the soul of Moshiach.

He asked Moshiach, "Master, when are you coming?"
Moshiach responded, "When your wellsprings [teachings] will be disseminated outward."
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To this end, the Rebbe has always stressed the importance of studying Chasidic philosophy, and teaching it to others; in order to hasten Moshiach's coming, and to prepare ourselves for the Messianic era.