Verse 5. - One shall burn the heifer. See on Exodus 29:14. And her blood. In all other cases the blood was poured away beside the altar, because in the blood was the life, and the life was given to God in exchange for the life of the offerer. This great truth, which underlay all animal sacrifices, was represented in this case by the sprinkling towards the sanctuary. The rest of the blood was burnt with the carcass, either because outside the holy precincts there was no consecrated earth to receive the blood, or in order that the virtue of the blood might in a figure pass into the ashes and add to their efficacy.

19:1-10 The heifer was to be wholly burned. This typified the painful sufferings of our Lord Jesus, both in soul and body, as a sacrifice made by fire, to satisfy God's justice for man's sin. These ashes are said to be laid up as a purification for sin, because, though they were only to purify from ceremonial uncleanness, yet they were a type of that purification for sin which our Lord Jesus made by his death. The blood of Christ is laid up for us in the word and sacraments, as a fountain of merit, to which by faith we may have constant recourse, for cleansing our consciences.And one shall burn the heifer in his sight,.... Another priest, as the Targum of Jonathan, Eleazar looking on, as that expresses it; the Jews say (g), that when the priest came to the mount of Olives, accompanied by the elders of Israel, before he burnt the cow, he dipped himself in a dipping place there; and the wood being laid there in order, wood of cedar, ash, fir, and fig trees, made in the form of a tower, with holes opened in it (to put in the fire, and that it might burn the quicker), and its aspect being to the west, he bound the cow, and laid her upon the pile, with her head to the south, and her face to the west; and then having slain it, and sprinkled its blood, as before related, he set fire to it by the help of some small wood: the burning of it may signify the dolorous sufferings of Christ, when the wrath of God was poured forth like fire upon him; the same was signified by roasting the passover lamb:

her skin, and her flesh, and her blood, with her dung, shall he burn; which may denote the extent of Christ's sufferings, reaching to all parts of his body, skin, flesh, and blood, and the shame and reproach that attended them, signified by dung; as well as how impure and accursed he was accounted when he was made sin for his people, bore their sins and suffered for them, even not in body only, but in his soul also; for his soul as well as his body were made an offering for sin.

(g) Misn. Parah, c. 3. sect. 7, 8, 9.