QUESTION: Why did Yaacov select Yehudah (and not Yosef) to establish the Yeshiva in Goshen?
ANSWER: Yosef was always connected to G-d throughout his time in Egypt, and one would have assumed that he was uniquely suited to establish the first Yeshiva in Galus. However, Torah was not his occupation. Yehudah’s occupation was Torah and thus, was selected to establish the Yeshiva. All aspects of Yeshiva have to reflect that Torah is their occupation, including the outreach efforts of the students. (לקוטי שיחות כרך ג, עמ' 827)