The following story is told of the Rebbe (grand hassidic rabbi) Rabbi Shmuel of Chabad Chassidus, who lived 1834-1882:
In lieu of thanks for something his son had done, his father the Rebbe took him among the Heavenly chambers. They came together to a certain spot, and from there only the Rebbe could continue.
As the son (who later became the Rebbe Rabbi Sholom Dov Ber of Chabad Chassidus, 1860-1920) waited for his father's return, he noticed a brilliant light emanating from one of the chambers. A man sat inside the dazzling brightness with closed eyes. Evidently, he did not really belong in this lofty place.
Soon the Rebbe returned and his son seized the opportunity to ask about the strange spectacle. "That person is a simple Jew," answered the Rebbe, "ye he is fluent in Tanya, which he knows by heart. In his lifetime, he always reviewed the words of Tanya, and the merit of these holy words deemed him worthy of such great revelation."
This story emphasizes the holiness that is attained through reviewing the words of Torah...
As told by the Lubavitcher Rebbe, Rabbi Menachem Mendel Schneerson.
Beyond the clear lesson stated by the Rebbe, what further does this story teach us? That certain people ascend to the Heavenly spheres and that they can view and/or interact with souls there.
BS"D - בסיעתא דשמיא