Leadership

But for civil disputes, you shall select, by prophetic vision, from among all the people, men with powers of leadership. These must also be pious men, who do not fear others, frutliful men to inspire confidence, incorruptible men, immune to bribery. Appoint them to be officers of thousands, officers of hundreds, officers of fifties, and officers of tens.

Whence should I have meat to give to all the people? For by their weeping they aim to test my ability of leadership; saying: ‘Give us flesh that we may eat.’
(רש"י עפ"י המפרשים.)

I am not able to lead the people myself and alone, unless a body of men is appointed to share the responsibility of leadership; it is too heavy for me.
(רש"י עפ"י המפרשים.)

Moses and Aaron fell on their faces before the whole assembly of the community of the Children of Israel, as a sign that they were ready to give up their leadership.

and one who also pronounces the name יהוה shall be put to death. The community leadership shall stone that person; stranger or citizen—having thus pronounced the Name—shall be put to death.

On account of the terrible things, etc. Because on 17 Tammuz five misfortunes occurred. On it, the tablets were broken as Moses descended from the mountain, as is explained in the Torah [Ex. 32:19]; the daily offering was cancelled and was no longer sacrificed in the First Temple; [the walls of] the city [of Jerusalem] were breached [in advance] of the destruction of the Second Temple; the evil Apostomos burnt the Torah; and an idol was placed in the Holy Temple. On on 9 Av, the great destruction occurred. The First Temple was destroyed on [that day], as was the Second; and on that very day it was decreed that our ancestors that were in the desert would not enter the land; and on that very day, [Romans] conquered a great town, called Beytar [during the Bar Kokhba revolt], which was home to thousands of Jews, all of whom fell into the hands of the idolaters and all of whom perished, which was a calamity as great as the destruction of the Temple; and on this very day, destined for calamity, the evil Turnusrufus plowed the Temple and its environs, thus fulfilling what was said: "Zion will be plowed as a field" (Jer. 26:18). And on the day of 3 Tishrei, Gedalia son of Ahikam was murdered. He had been appointed to lead the remaining survivors after the [first] destruction [and his death led to] the extinguishing of the remaining embers of Israel, because [in the wake of it] all were exiled and thousands were killed. And on 10 Tevet, the evil king of Babylon, Nebuchadnezzar assaulted Jerusalem and laid it under the siege and distress that led to the destruction.