Vayikra 9:1

1 And it come to pass on yom hashemini, that Moshe called to Aharon and his Banim, and the Ziknei Yisroel;

Vayikra 9:1 Meaning and Commentary

Leviticus 9:1

And it came to pass on the eighth day
When the seven days of consecration were ended, as Ben Gersom, the day following them, so soon was Aaron called to the execution of his office; and so both the Targum of Jonathan and Jarchi make it to be the eighth day of the consecration, or the day after the anointing of Aaron and his sons, and which they both say was the beginning, or first day of Nisan, the day the tabernacle was erected by Moses: but that seems to have been set up before the consecration; rather this was, as Aben Ezra says, the eighth day of the month Nisan or March, and was the eighth day of the consecration, which began at the first day, on which day the tabernacle was set up, ( Exodus 40:2 ) :

[that] Moses, called Aaron and his sons, and the elders of Israel;
Aaron and his sons to enter upon their office, by offering sacrifices for themselves, and for the people, and the elders to be witnesses thereof.

Vayikra 9:1 In-Context

1 And it come to pass on yom hashemini, that Moshe called to Aharon and his Banim, and the Ziknei Yisroel;

2 And he said unto Aharon, Take thee a young calf for a chattat (sin offering), and a ram for an olah (burnt offering), temimim (without blemish), and offer them before Hashem.

3 And unto the Bnei Yisroel thou shalt speak, saying, Take ye a sa’ir izzim (male goat) for a chattat (sin offering); and a calf and a keves (lamb), both of the first year, temimim (without blemish), for an olah;

4 Also a bull and a ram for shelamim (peace offerings), to sacrifice before Hashem; and a minchah mixed with shemen; for today Hashem will appear unto you.

5 And they brought that which Moshe commanded before the Ohel Mo’ed; and kol HaEdah drew near and stood before Hashem.