Leviticus 8:3-6

8:3 and assemble the whole congregation at the entrance of the Meeting Tent.” 8:4 So Moses did just as the Lord commanded him, and the congregation assembled at the entrance of the Meeting Tent. 8:5 Then Moses said to the congregation: “This is what the Lord has commanded to be done.”

Clothing Aaron

8:6 So Moses brought Aaron and his sons forward and washed them with water.