Musar sobre Números 1:49

Another difficulty is the subsequent statement in Bamidbar Rabbah 1,11, on the verse "but do not count the tribe of Levi, etc." (1,49), that Rabbi Pinchas ben Idi said: "when it says at the beginning of the Book, שאו את ראש, it pointedly does not say גדל את ראש, "elevate the head." The expression "שאו" is similar to the judge telling the executioner to behead the convicted prisoner. By the use of this word, G–d hinted that Israel would have to qualify for greatness only through the accumulation of merits. In that case the meaning of שאו, would be similar to Genesis 40, 12, "within three days Pharaoh will lift your head, (ישא) and restore you to your former position." Should Israel fail to merit greatness however, they would all die, as did the chief of the bakers in Genesis 40,19, who was told by Joseph that Pharaoh would ישא ראשך מעליך "will lift your head off you, and hang you on a pole." It had been clear to G–d at that time, that all the people about to be counted would die in the desert. G–d therefore told Moses to count the Levites not with the Israelites, but separately. The Levites had to be counted separately. If the tribe of Levi had been counted together with the other tribes the angel of death would have had authority to kill all Israel including them, and the decree that Israel could not enter the Holy Land would have become operative, since the Torah says in Numbers 14,29: "In this desert your carcasses will fall, and all of you who have been numbered in accordance with their respective number." G–d separated the count of the Levites in order to head off this catastrophe. This is also why the Torah does not even employ the same wording when referring to the counting of the Levites, but instead of שאן את ראש, we have פקוד את בני לוי in 3,15. So far that Midrash