Under the Old Testament Law, you don’t become a priest overnight! There was an announcement of consecration, clothing in priestly garments, anointing with oil, the slaying of one bull for their sin, one ram for a burnt offering, and another ram for ordination. An elaborate process took place in the three animal killings involving the specific sectioning of animal parts for distinct purposes, the pouring or throwing of blood at the altar, washing some of the parts, putting blood on the right ear, right hand, and right foot, and the placing of the priests’ hands on the head or horns of the animals (which symbolized the transferring of guilt). Moses tells Aaron and his sons that it will take seven days to complete their ordination, that this process is making atonement for them, and that without it, they will die. Becoming priests was deadly serious and life-giving for both the priests and the people, for the priests would then make atonement for the people. The New Testament teaches us that in Christ, we are a holy priesthood. We have been announced as priests by the Scripture. We have been clothed in a new garment, the righteousness of Christ (Phil 3:9). We have been anointed for service by the Holy Spirit (1 John 2:27). We have been set apart for service unto the Lord through sanctification (2 Thess 2:13). And our guilt has been transferred to Christ, who is our sin offering, burnt offering, and place of consecration. Christ is our Substitute who makes atonement for us so that we will not die. (2 Cor 5:21) And for us as well, becoming priests of God was deadly serious and life-giving!