Leviticus 10
Immediately after the glory of God's acceptance of the first official offerings, Nadab and Abihu offer unauthorized fire before the Lord — fire not commanded, from a source other than the divinely-kindled altar fire — and are consumed by fire from the divine presence. Moses explains: among those who approach me I will be proved holy. Aaron remains silent. The surviving sons are forbidden from mourning: the priests must not dishevel their hair or tear their clothes, even for their brothers, because the Lord's anointing oil is on them and the service must continue. A direct divine command forbids alcohol before entering the tent of meeting, grounding the prohibition in the priestly vocation of distinguishing holy from common and teaching the community. The chapter closes with a dispute over the sin offering goat that Aaron's sons burned rather than ate — Aaron's theological defense (given what has happened today, would God have been pleased if I had eaten the sin offering?) satisfies Moses, demonstrating that pastoral wisdom has a place within the Levitical system's rigor.
Leviticus 10:1
Aaron's sons Nadab and Abihu took their censers, put fire in them and added incense; and they offered unauthorized fire before the Lord, contrary to his command. The catastrophe that follows immediately the glory of the divine fire is one of the most jarring transitions in the Torah. Nadab and Abihu — the same sons who were with Moses and the seventy elders at the covenant meal of Exodus 24:9–11, who saw God and ate and drank — offer unauthorized fire before the Lord. The Hebrew zar means strange, foreign, unauthorized — fire that was not commanded, fire from a source other than the altar fire that God Himself had lit in Leviticus 9:24. The offense is the violation of the specific and the sacred with the general and the unauthorized.
Leviticus 10:2
So fire came out from the presence of the Lord and consumed them, and they died before the Lord. The same fire from the divine presence that consumed the offerings in Leviticus 9:24 — the fire of God's acceptance — consumes Nadab and Abihu in Leviticus 10:2. The fire that was the sign of divine pleasure becomes the instrument of divine judgment in the space of one chapter. The consuming fire does not distinguish between what is offered to it — it consumes what is brought before it, whether the authorized offering that pleases or the unauthorized offering that violates. Hebrews 12:29 says our God is a consuming fire — the fire that delights and the fire that destroys are the same fire. The holiness of God accepts what is holy; the holiness of God consumes what violates the holy.
Leviticus 10:3
Moses then said to Aaron, this is what the Lord spoke of when he said: among those who approach me I will be proved holy; in the sight of all the people I will be glorified. Aaron remained silent. Moses' interpretation of the sons' death is the theological explanation for the fire's judgment: among those who approach me I will be proved holy. The God who appears in glory to those who worship faithfully also appears in judgment to those who worship carelessly. The two appearances of the divine fire — acceptance in chapter 9 and judgment in chapter 10 — are both expressions of the same divine holiness. Aaron's silence is not indifference but the silence of a man who understands what has happened: the God whose altar he serves is the God whose holiness cannot be violated without consequence.