King Solomon, the wisest of all men, was unable to uncover the reasoning behind the mitzvah of the Red Heifer. Yet, the Midrash tells us that Moses did merit to understand the reason behind the Red Heifer. So why didn’t King Solomon, who was wiser than all men, grasp its reason? And if Moses did know it, why didn’t he share it with the rest of Israel, as he had done with other gifts G-d gave him?
We must conclude that Moses didn’t refrain from sharing the reason because he didn’t want to, but because the concept was beyond the grasp of any created being. Moses couldn’t reveal it because the people simply couldn’t comprehend it. Even Moses could not have attained this understanding on his own; rather, G-d granted it to him as a gift.
Statute of the Torah
It is G-d’s will that at least one mitzvah remain beyond human comprehension. The Torah states precisely: “This is the statute of the Torah” (not just “the statute of the heifer”)—because this mitzvah reflects the nature of the entire Torah. We are not to think that the Torah is mostly logical and only the Red Heifer defies reason. Rather, supra-rationality is a core foundation of the Torah—"the statute of the Torah" itself.
A Jew must understand that Torah and mitzvot, at their root, are far beyond comprehension. They are the will and wisdom of G-d, and just as no being can grasp the essence of G-d, neither can anyone truly comprehend His will and wisdom. True, G-d cloaked His will and wisdom in forms that we can relate to intellectually, so we can study Torah and fulfill mitzvot with joy and understanding. But at their core, Torah and mitzvot transcend all reason. A Jew must remember his understanding does not exhaust the depth or meaning of the commandments. There is always a higher layer surpassing all understanding.
The Role of Self-Sacrifice
That is why G-d left one mitzvah completely supra-rational—to serve as a concrete model for how a person should approach all commandments. If the reasons for all mitzvot had been revealed, people might begin to see Torah and mitzvot as purely logical or rational. This would diminish their ability to summon self-sacrifice, which by its nature goes beyond logic. If all mitzvot seemed logical, one might grow accustomed to do them only when they "make sense."
So G-d chose not to reveal the reason for the Red Heifer to the people—so that the supra-rational dimension of Torah would remain part of Jewish observance, and Torah would not be reduced to intellectual reasoning alone. Only Moses was shown the reason for the Red Heifer, because his entire essence was one of self-nullification and total devotion to G-d. Only someone of such selflessness could be capable of grasping this transcendent mystery.
