Bible Notes Online - Exodus 29 - ESV
Commentary

It was no light thing, even for a priest, to approach God. There was special clothing, and cleansing and consecration.

v1: A once-for-all event, to set apart Aaron and his sons as priests.

v2-3: The offerings, of unleavened cakes, of a bull, as a sin offering, and two rams, of consecration.

v4: Aaron and his sons were first washed with water.

v5-7: Aaron dressed, then anointed with oil.

v8-9: Aaron's sons are also dressed, but in tunics and headbands, as priests, since there was only one High Priest. The priesthood would always remain in their family.

v10-14: The offering was a sin offering, a reminder that the priests were not perfect, and that their ministry would always be less than perfect.

v15-18: The first ram was a burnt offering.

v19-21: Aaron and his sons were anointed with blood and with oil, for cleansing, and for setting apart.

v22-26: The wave offering was to do with consecration, and consisted of the second ram, and the unleavened cakes. A separate wave offering was also made for Aaron (v26).

v27-28: The heave offering, again to do with consecration, since the thigh as offered, raised up to God. This part of the fellowship (or peace) offerings was always to be given to Aaron and his sons. Doubtless it would be a reminder of the high calling given to them as priests.

v29-30: The garments worn by Aaron were to be passed on to his son who became High Priest after him.

v31-34: Aaron and his sons ate the second ram, called the ordination ram, v22.

v35-37: The consecration of the priests happened with the consecration of the altar. The idea was that there were holy things, which would make other things holy.

v38-41: Regular daily burnt offerings. Every day, including the Sabbath, the offering was to be made morning and evening. It may have been that Jesus referred to this when He mentioned that the priests profane the Sabbath, Matt 12.5.

v42-43: The Tabernacle was a special place. Where the burnt offerings were made, there God would meet with His people, and speak with His people. The place would be consecrated by His glory.

v44: The offerings for consecration had been made. But now God Himself promised to consecrate the Tabernacle, and the priests.

v45-46: A reminder that the people were delivered from Egypt, so that God might dwell amongst them.