Jewish Counting

Sefer Bamidbar begins with the counting of Bnei Yisrael, with a hint of military purposes (“all those who go out to the army” – Bamidbar 1:3). Rashi (ad loc. 1) mentions the other countings that were carried out, which seem important, considering that Hashem commanded Moshe to involve great people – Aharon and the heads of the tribes. What is the big idea behind this, and why is the exact manner it was done important?

The Choice of Leaders