The Shikkerdovid would like to share a “musing” on the beginning of this parsha. The parsha opens with the Para Adumah-red heifer and tells us ” Gd spoke to Moshe and Aharon saying. This is the Chok (law with no reason) of the Torah take a red heifer. It describes a whole “process” of slaughtering, buring ashes, taking outside of the camp etc. It is not until approximately the 12th pasuk and thereon that we have an idea what this is all about. Logically, it would appear to the Shikker Dovid that the Torah should have started with the purpose of the law and then give the process.
Maybe the Answer is simply that Gd likes process. He like us to go through our paces, do our diligence, go through our motions and then reveal the ultimate purpose. Maybe this is life. We go through tests, trials, aggravations, obstacles and then finally after a while, we understand or see the value. The “process” of Parah Adumah is the value. The goal is purity.