10 And thou shalt cause a bullock to be brought before the tabernacle of the congregation: and Aaron and his sons shall put their hands upon the head of the bullock.
11 And thou shalt kill the bullock before the Lord, by the door of the tabernacle of the congregation.
12 And thou shalt take of the blood of the bullock, and put it upon the horns of the altar with thy finger, and pour all the blood beside the bottom of the altar.
13 And thou shalt take all the fat that covereth the inwards, and the caul that is above the liver, and the two kidneys, and the fat that is upon them, and burn them upon the altar.
14 But the flesh of the bullock, and his skin, and his dung, shalt thou burn with fire without the camp: it is a sin offering.
After being properly dressed, washed, and anointed, the priests were further prepared by sacrificial ritual. First came the bullock, which we hear in verse 14 was being offered up as a sin offering. This was for the priests to make atonement for all that they had done wrong. Like the rest of us, each of them had violated the ideal at one point or another. They had pursued self over others, they had betrayed their own consciences, they had entered misalignment with truth.
The symbolism of having the priests place their hands on the head of the bullock is clear. This placing of the hands upon the head is repeated with just about every sacrifice and is a clear representation of the animal being made to stand in place of the person. The people are choosing the animal as their representative, and witness as it receives the punishment in their place. That punishment is death, because “the wages of sin is death.”
It is worth noting, the laying on of hands is also a common practice when a disciple is ordained to a particular responsibility in the church. This makes sense, as once again that person is being selected to stand in for the other people, to make a sacrifice of his time to do the responsibilities in place of all the others.
Let us consider the meaning of what is done to the separate parts of the bullock. First, its blood is placed upon the horns of the altar. Later in the Bible we hear how the guilty would cling to these horns when seeking mercy for their wrongs, so perhaps the blood upon them represented coming to the Lord in desperation and moral anguish, casting yourself upon His mercy.
Then, the fat and the kidneys are burned upon the altars. The significance of giving the fat to the altar should be immediately clear. It was giving one’s passions, one’s indulgence, one’s reserve of energy to the Lord. No longer would the repentant give his indulgence to his carnal appetites, but to His maker.
Then, all of the bad parts: the skin and the dung, and also the very flesh of the beast, were burned without the camp. This means exiling the sin and the self, taking it out of the camp that it doesn’t belong in and destroying it. From this point on the sinner is not to be those parts anymore.
And so, atonement for sin is made. The old man of sin is destroyed, his passion and energy are dedicated to the Lord, and he casts himself upon God’s mercy. This is the same offering that we all spend our entire lives making over and over again.