2. This is the ordinance of the law--an institution of a peculiar nature ordained by law for the purification of sin, and provided at the public expense because it was for the good of the whole community.
      Speak unto the children of Israel, that they bring thee a red heifer without spot, &c.--This is the only case in which the color of the victim is specified. It has been supposed the ordinance was designed in opposition to the superstitious notions of the Egyptians. That people never offered a vow but they sacrificed a red bull, the greatest care being taken by their priests in examining whether it possessed the requisite characteristics, and it was an annual offering to Typhon, their evil being. By the choice, both of the sex and the color, provision was made for eradicating from the minds of the Israelites a favorite Egyptian superstition regarding two objects of their animal worship.

JFB.