The altar used at the consecration of Aaron and his sons was a "horned" or official altar, the central one. The offerings were a bullock, two rams, unleavened bread, etc. (
Ex 29:1-4), and were brought to the door of the sanctuary. The ritual consisted of Aaron laying his hand on the bullock's head, designating it as his substitute (
Ex 29:10), killing it before the tent of meeting (
Ex 29:11), smearing some blood on the horns of the altar, and pouring the rest at its base (
Ex 29:12). The blood consecrated the altar, the life was given as atonement for sins, the fat parts were burned upon the altar as food for God, and the flesh and remainder were burned without the camp (
Ex 29:13,
14). This is a sin offering-chaTTa'th-the first time the term is used. Probably introduced by Moses, it was intended to be piacular and to "cover" possible sin. One ram was next slain, blood was sprinkled round about the altar, flesh was cut in pieces, washed and piled on the altar, then burned as an offering by fire ('ishsheh) unto God as a burnt offering, an odor of a sweet savor (
Ex 29:15-18). The naive and primitive nature of this idea is apparent. The other ram, the ram of consecration, is slain, blood is smeared on Aaron's right ear, thumb and great toe; in the case of his sons likewise. The blood is sprinkled on the altar round about; some upon the garments of Aaron and his sons (
Ex 29:19-21). Certain parts are waved before Yahweh along with the bread, and are then burned upon the altar (
Ex 29:22-25). The breast is offered as a wave offering (tenuphah), and the right thigh or shoulder as a heave offering (terumah). These portions here first mentioned were the priests' portion for all time to come, although this particular one went to Moses, since he officiated (
Ex 29:26-30). The flesh must be boiled in a holy place, and must be eaten by Aaron and his sons only, and at the sanctuary. What was left till morning must be burned (
Ex 29:31-34). Consecrated to a holy service it was dangerous for anyone else to touch it, or the divine wrath would flame forth. The same ceremony on each of the seven days atoned for, cleansed and consecrated the altar to the service of Yahweh, and it was most holy (
Ex 29:35-37). The altar of incense is ordered (
Ex 30:1), and Aaron is to put the blood of the sin offering once a year upon its horns to consecrate it.