Likutei Sichos – Vol 25 p 252 ff – Yosef is the Name of the Yidden in Galus

Vayigash The Tribes (51) Likutei Sichos – Vol 25 p 252 ff The Jewish nation in Galus is called Yosef, as Yosef is the source of the strength to survive and thrive in Golus, as he did so better than anyone.