'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.'--LEV. x. 1-11.
This solemn story of sin and punishment is connected with the preceding chapter by a simple 'and.' Probably, therefore, Nadab and Abihu 'offered strange fire,' immediately after the fire from Jehovah had consumed the appointed sacrifice. Their sin was aggravated by the time of its being committed. But a week had passed since the consecration of their father and themselves as priests. The first sacrifices had just been offered, and here, in the very blossoming time, came a vile canker. If such licence in setting aside the prescriptions of the newly established sacrificial order asserted itself then, to what lengths might it not run when the first impression of sanctity and of God's commandment had been worn by time and custom? The sin was further aggravated by the sinners being priests, who were doubly obliged to punctilious adherence to the instituted ritual. If they set the example of contempt, would not the people better (or, rather, worsen) their instruction?
Unquestionably, their punishment was awfully severe. But we shall entirely misconceive their sin if we judge it by our standards. We are not dependent on forms as Israel was, but the spiritual religion of Christianity was only made possible by the externalism of the older system. The sweet kernel would not have softened and become juicy without the shelter of the hard shell. Scaffolding is needed to erect a building; and he is not a wise man who either despises or would keep permanently standing the scaffold poles.
We draw a broad distinction between positive commandments and moral or religious obligations. But in the Mosaic legislation that distinction does not exist. There, all precepts are God's uttered will, and all disobedience is rebellion against Him. Nor could it be otherwise at the stage of development which Israel had reached.
What, then, was the crime of these two rash sons of Aaron? That involves two questions: What did they do? and What was the sin of doing it? The former question may be answered in various ways. Certainly the designation of 'strange fire' seems best explained by the usual supposition that it means fire not taken from the altar. The other explanations, which make the sin to have been offering at an unauthorised time, or offering incense not compounded according to the prescription, give an unnatural meaning to the phrase. It was the 'fire' which was wrong,--that is, it was 'fire which they had kindled,' caught up from some common culinary hearth, or created by themselves in some way.