Take Aaron and his sons with him, and the garments, and the anointing oil, and a bullock for the sin offering, and two rams…
The reasons why the Lord thus precisely appointed these priests, and would not leave it to every man to perform this office, were these and such like.
1. It was to be known that not every man — no, not any man but the Man Christ Jesus could appease God's wrath, satisfy His justice, and take away the sins of the world, reconciling us to God and putting us in assurance of eternal life. This could not be figured out better than by secluding all the whole host of Israel from this office and choosing but Aaron and his sons as types of Christ, this only able Priest, and therefore they only were chosen, and so by such ordinance the majesty, authority, and (if we may so speak) the propriety of Christ's office resembled and shadowed.
2. God was ever the God of order, decency, and comeliness, and therefore in His Church would have all things done accordingly, not enduring any to be an invader of another man's right, an intruder of himself into another man's office, and a busybody out of rule, out of order. Certain men, therefore, are appointed, and they only shall do it. Others, if they meddle, being strangers, because not called, shall die the death as you hear before. Thus hath He also in the New Testament established a ministry, and given some apostles, some evangelists, some pastors and doctors for the building up of His Church, &c. He also decreed that the contempt of these is the contempt of Him; and then judge you, first or last, what punishment will ensue.
Parallel VersesKJV: Take Aaron and his sons with him, and the garments, and the anointing oil, and a bullock for the sin offering, and two rams, and a basket of unleavened bread;