The Torah has 613 mitzvot. One way to classify these mitzvot is to divide them into two categories; mitzvot which we understand and mitzvot which we do not understand. In the first category we can place the mitzvot to respect our elders and to give charity. In the second category we can place the prohibition against wearing clothing made from linen and wool or the prohibition against cooking meat and milk together.
There are actually many mitzvot which puzzle us but one mitzvah is considered to be the mystery and that is Parah Adumah. Chazal taught that only Moshe Rabbeinu was vouchsafed the rationale for this mitzvah.
In tomorrow’s session we will discuss why this mitzvah is incomprehensible and what tentative explanations were suggested over the years.