Leviticus 9:1-24 On the 8th day, Aaron and his sons began the service in the temple.

The Priestly Ministry Begins
9 It came to pass on the eighth day that Moses called Aaron and his sons and the elders of Israel. 2 And he said to Aaron, “Take for yourself a young bull as a sin offering and a ram as a burnt offering, without blemish, and offer them before the Lord. 3 And to the children of Israel you shall speak, saying, ‘Take a kid of the goats as a sin offering, and a calf and a lamb, both of the first year, without blemish, as a burnt offering, 4 also a bull and a ram as peace offerings, to sacrifice before the Lord, and a grain offering mixed with oil; for today the Lord will appear to you.’ ”