Exodus 29:45–46 (HCSB)
45 I will dwell among the Israelites and be their God. 46 And they will know that I am Yahweh their God, who brought them out of the land of Egypt, so that I might dwell among them. I am Yahweh their God.
All of chapter 29 is a single pericope concerning the consecration of Aaron and his sons, and the priesthood in perpetuity. Towards the end of the chapter, likely due to the mentions of sacrifice, there is also instruction concerning permanent sacrifices not related to the consecration of the priests.
There are three types of sacrifices/offerings to be made in order to consecrate Aaron and his sons. First is the bull, which is a sin offering, thus cleansing the priests. Second is the ram, which is a burnt offering, and establishes the commitment of the priests to follow and obey God. Last comes another ram, along with bread, cake, and a wafer, which is a wave offering, or a presentation offering, which establishes the communion of the priests, and therefore Israel, with God. The order seems to significant, since they build upon each other.
Ultimately, rather than be bogged down in the minutiae of the sacrifice details, like what pieces of fat get burned where, we should keep the big picture in mind, which is neatly packed up for us by God in the final verses of the chapter. What we see is that God has created the means to again dwell with His people. When He brought the Israelites out of Egypt it was not simply to rescue them, it was to be with them, among them. Just as Jesus came to rescue us, it was not solely for that purpose, but much more, to bring us into His family, to adopt us permanently. But prior to Jesus’ sacrifice, this was the method God used to establish His relationship with His people.
Lord, thank You for always planning on reaching us, to dwell among us. I pray that we recognize that, that You are a relational God, not just someone to save us so we can move along our own way, but to save us and adopt us as Your children. Amen.