According to the Ramdu, Rebbe Yehoshua Minatzrat became central to the the blessing given to Esav in Beresheit 27:4 symbolizing the Israel which is worshipped by Esav (Rome) so that Esav maintains a connection to his brother.
Ramdu's commentary on Beresheit 27:40 says: And another great matter was hinted at in what is written, "And you shall serve your brother" and even he (Ya'aqov) will be worshipped as G-d. The Edomites will choose to take for themselves a man from the seed of Ysrael to be their god. In the beginning the Romans worshipped stars and constellations, and in the end when it occurred to them to choose new gods, they took for themselves the despised Nazarene to be god over them. And this is the meaning according to "And you will serve your brother" which is the concept of Eloqut.