Before entering the Promised Land, the three great Leaders of the Desert; Miriam, Aharon and Moshe, who believed in Redemption and Liberation in the most difficult times will die. About the death of two of them we'll read tomorrow (at least, here in Israel). Each of them had a specific symbolic role in the process of liberation, but all three of them also reflect the long journey of the Desert, where the people of Israel wasn't able to assume the responsibility of freedom and therefore was entirely dependent on Heavenly protection, Food and Water. Maybe the "purifying" ritual of the Red Cow before the death of the 3 leaders (the Teacher, the Priest, the Prophet) teaches us that in order to assume the responsibility of freedom as adults, you have to understand that even great leaders are mortal and human, and that we shouldn't deify death and graves.
Entering the "Promised Land" may require more individual and collective responsibility, without relying on charismatic leadership.