81 Then the Lord said to Moses, 2 "Bring Aaron and his sons, along with their sacred garments, the anointing oil, the bull for the sin offering, the two rams, and the basket of bread made without yeast, 3 and call the entire community of Israel together at the entrance of the Tabernacle. " 4 So Moses followed the Lord 's instructions, and the whole community assembled at the Tabernacle entrance. 5 Moses announced to them, "This is what the Lord has commanded us to do!" 6 Then he presented Aaron and his sons and washed them with water. 7 He put the official tunic on Aaron and tied the sash around his waist. He dressed him in the robe, placed the ephod on him, and attached the ephod securely with its decorative sash. 8 Then Moses placed the chestpiece on Aaron and put the Urim and the Thummim inside it. 9 He placed the turban on Aaron's head and attached the gold medallion-the badge of holiness-to the front of the turban, just as the Lord had commanded him. 10 Then Moses took the anointing oil and anointed the Tabernacle and everything in it, making them holy. 11 He sprinkled the oil on the altar seven times, anointing it and all its utensils, as well as the washbasin and its stand, making them holy. 12 Then he poured some of the anointing oil on Aaron's head, anointing him and making him holy for his work. 13 Next Moses presented Aaron's sons. He clothed them in their tunics, tied their sashes around them, and put their special head coverings on them, just as the Lord had commanded him.
Matthew Henry's Commentary on Leviticus 8:1-13
Commentary on Leviticus 8:1-13
(Read Leviticus 8:1-13)
The consecration of Aaron and his sons had been delayed until the tabernacle had been prepared, and the laws of the sacrifices given. Aaron and his sons were washed with water, to signify that they ought to purify themselves from all sinful dispositions, and ever after to keep themselves pure. Christ washes those from their sins in his own blood whom he makes kings and priests to our God, Hebrews 10:22. The anointing of Aaron was to typify the anointing of Christ with the Spirit, which was not given by measure to him. All believers have received the anointing.