Leviticus 9:22-10:11 New Revised Standard Version (NRSV)
22 Aaron lifted his hands toward the people and blessed them; and he came down after sacrificing the sin offering, the burnt offering, and the offering of well-being. 23 Moses and Aaron entered the tent of meeting, and then came out and blessed the people; and the glory of the Lord appeared to all the people. 24 Fire came out from the Lord and consumed the burnt offering and the fat on the altar; and when all the people saw it, they shouted and fell on their faces.
Nadab and Abihu
10 Now Aaron’s sons, Nadab and Abihu, each took his censer, put fire in it, and laid incense on it; and they offered unholy fire before the Lord, such as he had not commanded them. 2 And fire came out from the presence of the Lord and consumed them, and they died before the Lord. 3 Then Moses said to Aaron, “This is what the Lord meant when he said,
‘Through those who are near me
And Aaron was silent.
4 Moses summoned Mishael and Elzaphan, sons of Uzziel the uncle of Aaron, and said to them, “Come forward, and carry your kinsmen away from the front of the sanctuary to a place outside the camp.” 5 They came forward and carried them by their tunics out of the camp, as Moses had ordered. 6 And Moses said to Aaron and to his sons Eleazar and Ithamar, “Do not dishevel your hair, and do not tear your vestments, or you will die and wrath will strike all the congregation; but your kindred, the whole house of Israel, may mourn the burning that the Lord has sent. 7 You shall not go outside the entrance of the tent of meeting, or you will die; for the anointing oil of the Lord is on you.” And they did as Moses had ordered.
8 And the Lord spoke to Aaron: 9 Drink no wine or strong drink, neither you nor your sons, when you enter the tent of meeting, that you may not die; it is a statute forever throughout your generations. 10 You are to distinguish between the holy and the common, and between the unclean and the clean; 11 and you are to teach the people of Israel all the statutes that the Lord has spoken to them through Moses.