Rabbi Kamenetsky was impressed by him and later called him back to Toronto where he was given a teaching position in the Talmud Torah and yeshiva.
Epstein maintained a relatively low profile – for example, he did not join the Moetzes Gedolei HaTorah, despite numerous invitations.
[7] His non-membership in the Moetzes, however, was a mere formality, as he still served as the address of last resort for many of the thorniest problems facing Klal Yisrael.
[8] His approbation was sought (and received) for a number of major projects, such as the Schottenstein edition of both the Talmud Bavli and Yerushalmi of which he was a big supporter of.
[10] His son and successor,[11] Rabbi Kalman Epstein, a Torah scholar in his own right, gives the highest level shiur in the Yeshiva.