Leviticus 10:3-7

Then Moses said to Aaron, “It is what the Lord spoke, saying, ‘By those who come near Me I will be treated as holy, And before all the people I will be honored.’ ” So Aaron, therefore, kept silent.

Moses called also to Mishael and Elzaphan, the sons of Aaron’s uncle Uzziel, and said to them, “Come forward, carry your relatives away from the front of the sanctuary to an area outside of the camp.”

So they came forward and carried them, still in their tunics, to an area outside the camp, just as Moses had said.

Then Moses said to Aaron and to his sons Eleazar and Ithamar, “Do not uncover your heads nor tear your clothes, so that you do not die and He does not become wrathful against all the congregation. But your kinsmen, the entire house of Israel, shall weep for the burning which the Lord has brought about.

You shall not even go out from the doorway of the tent of meeting, or you will die; for the Lord’s anointing oil is upon you.” So they did according to the word of Moses.