At the end of Vayigash, the Torah tells us how Yosef managed the land of Egypt during the years of famine. Among other things, he moved all Egyptians from city to city. Rashi (47:21) says that this illustrates the greatness of Yosef - for his intent was to prevent his brothers from being called ‘exiles’. This episode raises a few questions on this interpretation. The answers reveal a deeper insight into the greatness of Yosef.