שמן המשחה
There is a Gemara in מסכת כריתות that speaks of the magic of the שמן המשחה, anointing oil that was prepared by Moshe Rabbeinu. There were a total of twelve לוגים of oil that was prepared. Each לוג was 21 and a half ounces. Yet, these three gallons of oil lasted for a very long time, and covered a great deal. The entire משכן and all of its utensils were anointed with this שמן המשחה. Aharon and his sons, were anointed with this oil. Every High Priest and king in the First Temple, was anointed with this oil. This שמן המשחה was meant to last forever. There still exists some of that original, miraculous שמן המשחה. It is hidden in Jerusalem, together with the ארון קודש, Holy Ark. The Torah says, זה לי לדורותיכם, “This is for Me for all generations.” זה equals twelve, referring to the twelve לוג of שמן המשחה, that was to last for generations. The שמן המשחה was clearly one of the unknown, amazing miracles alluded to in the Torah.