Parshat Beha'alotekha

KMTT - the Torah Podcast - A podcast by Rabbanei Yeshivat Har Etzion - Thursdays

Parshat Beha'alotekha - The Three Books of Bamidbar, written by Rav Yair Kahn According to Chazal, the section of this week's parasha beginning with va-yehi bi-nesoa ha-aron serves to split the entire book of Bamidbar into three independent books. What is the meaning of this statement, and what roles do each of the "fragments" of the book of Bamidbar play?