The ordination lasted seven days (Lev 8:3333You shall not go outside the doorway of the tent of meeting for seven days, until the day that the period of your ordination is fulfilled; for he will ordain you through seven days.). Then there comes an “eighth day”. The eighth day speaks of a new beginning. Something starts that has never been before. After the ordination Aaron and his sons will bring their first offerings. It is a day that will never be repeated in its meaning. You can only do something for the first time once.
Our ordination lasts our entire life, but there is again and again an eighth day. Our priesthood can always be new. With this eighth day is connected the appearance of the lordly body of the LORD (verses 4,6,234and an ox and a ram for peace offerings, to sacrifice before the LORD, and a grain offering mixed with oil; for today the LORD will appear to you.’”6Moses said, “This is the thing which the LORD has commanded you to do, that the glory of the LORD may appear to you.”23Moses and Aaron went into the tent of meeting. When they came out and blessed the people, the glory of the LORD appeared to all the people.). We are going to see more and more of the glory of the Lord Jesus. If He then actually appears, only then our priestly service will take place in a completely new way.
Aaron’s service is in the foreground in this chapter. Moses addresses him. Aaron is the one who brings the offerings. His sons, who are a picture of the church that has insight into the service of the true Aaron, disappear into the background. They will give him the blood every time. The sons of Aaron in a spiritual sense are those who have received a special impression of the meaning and value of the blood of the true offering, the Lord Jesus, by occupying themselves with it. Blood is the foundation of all true priestly service.