At the beginning of Parshat Vaera there is an interruption in the narrative of the Exodus process, and God delivers a speech. By closely examining this speech - by dividing it into two parts and noticing structural and chiastic parallels, we learn that this speech was meant to elevate Moshe's mission from a personal-ethical mission to a national- historical one. 

Courtesy of the Virtual Beit Midrash, Yeshivat Har Etzion