Talmud Bavli Berachot on Shekhinah Residing with Students of Torah

"Whence is it that the Holy One, blessed be He, is found in the synagogue? As it is said, 'God standeth in the godly congregation' (Psalms 132:1). And whence is it that when ten assemble for prayer the Shekhinah is in their midst? As it is said, 'God standeth in the godly congregation' (ibid.). And whence is it that when three sit and judge, the Shekhinah is in their midst? As it is said, 'In the midst of the judges, He judgeth' (ibid.). And whence is it that when two sit and occupy themselves with the study of the Torah, the Shekhinah is in their midst? As it is said, 'They that feared the Lord spoke to one another, and the Lord hearkened and heard' (Malachi 3:16). And whence is it that even if an individual sit and occupies himself with the study of the Torah, the Shekhinah is with him? As it is said, 'In every place where I cause My name to be remembered I will come unto thee and bless thee' (Exodus 20:24)."

-- Talmud Bavli, Berachot 6a