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1 And Nadab and Abihu, the sons of Aaron, took either of them his censer, and put fire therein, and put incense thereon, and offered strange fire before the LORD, which he commanded them not. 2 And there went out fire from the LORD, and devoured them, and they died before the LORD. 3 Then Moses said unto Aaron, This is it that the LORD spake, saying, I will be sanctified in them that come nigh me, and before all the people I will be glorified. And Aaron held his peace. 4 And Moses called Mishael and Elzaphan, the sons of Uzziel the uncle of Aaron, and said unto them, Come near, carry your brethren from before the sanctuary out of the camp. 5 So they went near, and carried them in their coats out of the camp; as Moses had said. 6 And Moses said unto Aaron, and unto Eleazar and unto Ithamar, his sons, Uncover not your heads, neither rend your clothes; lest ye die, and lest wrath come upon all the people: but let your brethren, the whole house of Israel, bewail the burning which the LORD hath kindled. 7 And ye shall not go out from the door of the tabernacle of the congregation, lest ye die: for the anointing oil of the LORD is upon you. And they did according to the word of Moses. 8 And the LORD spake unto Aaron, saying, 9 Do not drink wine nor strong drink, thou, nor thy sons with thee, when ye go into the tabernacle of the congregation, lest ye die: it shall be a statute for ever throughout your generations: 10 And that ye may put difference between holy and unholy, and between unclean and clean; 11 And that ye may teach the children of Israel all the statutes which the LORD hath spoken unto them by the hand of Moses. 12 And Moses spake unto Aaron, and unto Eleazar and unto Ithamar, his sons that were left, Take the meat offering that remaineth of the offerings of the LORD made by fire, and eat it without leaven beside the altar: for it is most holy: 13 And ye shall eat it in the holy place, because it is thy due, and thy sons' due, of the sacrifices of the LORD made by fire: for so I am commanded. 14 And the wave breast and heave shoulder shall ye eat in a clean place; thou, and thy sons, and thy daughters with thee: for they be thy due, and thy sons' due, which are given out of the sacrifices of peace offerings of the children of Israel. 15 The heave shoulder and the wave breast shall they bring with the offerings made by fire of the fat, to wave it for a wave offering before the LORD; and it shall be thine, and thy sons' with thee, by a statute for ever; as the LORD hath commanded. 16 And Moses diligently sought the goat of the sin offering, and, behold, it was burnt: and he was angry with Eleazar and Ithamar, the sons of Aaron which were left alive, saying, 17 Wherefore have ye not eaten the sin offering in the holy place, seeing it is most holy, and God hath given it you to bear the iniquity of the congregation, to make atonement for them before the LORD? 18 Behold, the blood of it was not brought in within the holy place: ye should indeed have eaten it in the holy place, as I commanded. 19 And Aaron said unto Moses, Behold, this day have they offered their sin offering and their burnt offering before the LORD; and such things have befallen me: and if I had eaten the sin offering to day, should it have been accepted in the sight of the LORD? 20 And when Moses heard that, he was content.
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[AD 258] Cyprian on Leviticus 10:1
The sons of Aaron also, who set upon the altar a strange fire not commanded by the Lord, were at once blotted out in the sight of the avenging Lord. These examples, you will see, are being followed wherever the tradition which comes from God is despised by lovers of strange doctrine and replaced by teaching of merely human authority.

Source: Treatise I. On the Unity of the Church 18-19
[AD 258] Cyprian on Leviticus 10:1
Nor do we propose this, dearest brother, without the authority of divine Scripture, when we say that all things are arranged by divine direction by a certain law and by special ordinance, and that none can usurp to himself, in opposition to the bishops and priests, anything which is not of his own right and power. For Korah, Dathan, and Abiram endeavoured to usurp, in opposition to Moses and Aaron the priest, the power of sacrificing; and they did not do without punishment what they unlawfully dared. The sons of Aaron also, who placed strange fire upon the altar, were at once consumed in the sight of an angry Lord; which punishment remains to those who introduce strange water by a false baptism, that the divine vengeance may avenge and chastise when heretics do that in opposition to the Church, which the Church alone is allowed to do.

Source: Epistle LXXII.8
[AD 735] Bede on Leviticus 10:1
This is not far from being a sign of our unhappy time, in which some who have attained positions as priests and teachers—merely to mention it is both distressing and sad enough—are consumed by the fire of heavenly vengeance because they prefer the fire of cupidity to the fire of heavenly love. Their eternal damnation was prefigured by the temporal death of Aaron’s sons.

Source: On the Tabernacle 3.2
[AD 420] Jerome on Leviticus 10:9
Priests given to wine are both condemned by the apostle and forbidden by the old law. Those who serve the altar, we are told, must drink neither wine nor shechar. Now every intoxicating drink is in Hebrew called shechar, whether it is made of corn or of the juice of apples, whether you distil from the honeycomb a rude kind of mead or make a liquor by squeezing dates or strain a thick syrup from a decoction of corn. Whatever intoxicates and disturbs the balance of the mind avoid as you would wine.

Source: LETTER 52.11