Deuteronomy 21:1

1.If one be found slain in the land. This Supplement: is of a mixed character, relating partly to the civil, and partly to the criminal law. We are informed by it how precious to God is the life of man; for, if a murder had been committed by some unknown person, He requires an expiation to be made, whereby the neighboring cities should purge themselves from the pollution of the crime. Whence it appears that the earth is so polluted by human blood, that those who encourage murder by impunity, implicate themselves in the guilt. The question here is as to a secret crime, the guilt of which attaches to the neighboring cities, until, by the institution of a diligent inquiry, they can testify that the author is not discovered; how much less excusable, then, will they be, if they allow a murderer to escape with impunity? The rite prescribed is, that the elders of the nearest city should take a heifer which had not drawn in a yoke, and bring it into a stony and barren valley, cut off its neck with the assistance of the priests, wash their hands, and bear witness that their hands as well as their eyes are pure, as not being cognizant of the criminal. God chose a heifer that had not born a yoke, in order that the satisfaction made by innocent blood might be represented in a more lively manner; whilst it was to be killed in a desert place, that the pollution might be removed from the cultivated lands. For, if the blood of the heifer had been shed in the middle of the market-place of the city, or in any inhabited spot, the familiarity with the sight of blood would have hardened their minds in inhumanity. For the purpose, therefore, of awakening horror, it was drawn out into a solitary and uncultivated spot, that they might be thus accustomed to detest cruelty. But although, properly speaking, this was not a sacrifice which could be offered nowhere except in the sanctuary, still it nearly approached to the nature of a sacrifice, because the Levites were in attendance, and a solemn deprecation was made; nevertheless, they were not only employed as ministers of the altar, but also as judges, for their office is expressed in the words, that they were “chosen to minister to God, to bless the people, and to pronounce sentence as to every stroke.”