“For it will take seven days to ordain you” (v33). The Israelite priests had no special holiness in themselves; they weren’t more righteous or closer to God. In order to lead the people in worship, they had to be ritually anointed, consecrated, and finally ordained as priests (8:12), and later they made regular sacrifices to cleanse themselves from sin. This enabled the priests to approach God on behalf of the people. If they ignored these practices and arrogantly entered the Holy Place, they risked their very lives (v35).
“Aaron and his sons shall eat it” (v31). Like the priests who ate the sacred offerings, we are made holy through Jesus, so that we can break bread with our Creator.