In the Old Testament: Just like the other sacrifices, the sacrifice of atonement was offered in the Tabernacle. The high priest cleaned himself and put on the holy linen garments instead of the usual formal dress for rituals, and selected a young bull as a sin offering and a ram as a burnt offering for himself and his house (Leviticus 16:3-4).
The high priest laid his hands on the head of the offerings to pass on the sin. The laying on of hands was an essential part of the Day of Atonement. If it had not been so, without the laying on of hands, atonement for sin could not be achieved, and therefore, sacrifices could not be offered, nor could the yearly sins of Israel be passed on.
In Leviticus 16:21, “Aaron shall lay both his hands on the head of the live goat, confess over it all the iniquities of the children of Israel, and all their transgressions, concerning all their sins, putting them on the head of the goat, and shall send it away into the wilderness by the hand of a suitable man.”
He took two goats as sin offerings and a ram as a burnt offering from the people (Leviticus 16:5). Then he presented two goats before the Lord at the door of the Tabernacle and cast lots to select the one for ‘the Lord’ and the other to act as the ‘scapegoat.’
The one for the Lord was offered as a sin offering, and the scapegoat was offered alive before the Lord to atone for the yearly sins of the people of Israel and then put out into the wilderness (Leviticus 16:7-10).
The sins of the Israelites had to be passed on to the scapegoat by the laying on of hands. Then the scapegoat, which took on itself all the sins of Israel, was put out into the wilderness for peace between people and God. Thus the yearly sins of Israel were washed away.
In the New Testament: In the same way in the New Testament, Jesus Christ was baptized by John the Baptist (the laying on of hands in the Old Testament) and took away all the sins of the world as the sacrificial Lamb to fulfill the salvation of God (Leviticus 20:22, Matthew 3:15, John 1:29, 36).
In the Old Testament, before the casting of lots, Aaron killed the young bull as a sin offering for himself and his house (Leviticus 16:11). Then he took a censer full of burning coals of fire from the altar before the Lord with his hands full of sweet incense beaten fine and took it beyond the veil. Then he put the incense on the fire before the Lord so that the cloud of incense might hover over the mercy seat. He also took some of the blood of the bull and sprinkled it with his finger on and before the mercy seat seven times (Leviticus 16:12-19).
On the Day of Atonement, the laying of Aaron’s hands on the head of the offering could not be omitted. Aaron laid hands on the goat and passed all the sins and all the iniquities of the Israelites on to his head. Then a suitable man took the goat into the wilderness and sent it forth. The scapegoat wandered in the wilderness with the sins of Israel and died for them in the end. This was the sacrifice of atonement in the Old Testament.
It is the same in the New Testament except it was Jesus Christ, as the scapegoat, who took away all the sins of the world upon Himself through His baptism and bled and died on the Cross for us.
Therefore now, the salvation from all sins cannot be brought without the baptism and crucifixion of the heavenly high priest, Jesus Christ. This is the fulfillment of salvation of being born again of water and the Spirit.