Leviticus 8:1-4

And the LORD spake unto Moses, saying,

Take Aaron and his sons with him, and the garments, and the anointing oil, and a bullock for the sin offering, and two rams, and a basket of unleavened bread;

And gather thou all the congregation together unto the door of the tabernacle of the congregation.

And Moses did as the LORD commanded him; and the assembly was gathered together unto the door of the tabernacle of the congregation.