Theological term
Impurity
2 sermons · All terms
Of the Duties of the Priests and Levites
Numbers 18–19 belongs to a literary unit stretching from chapters 16 through 19, all of which works to vindicate Aaron's God-ordained priesthood in the aftermath of Korah's rebellion. Chapter 18 defines the distinct duties and the provision of both priests and Levites, while chapter 19 supplies the purification rites that answer Israel's terrified cry in chapter 17 — 'shall we all utterly die?' — by providing a lawful way of drawing near to a holy God. The regulative principle of worship stands at the centre of these chapters: God alone determines who may approach Him, by what means, and under what conditions, and the death penalties attached to violations are not capricious but reflect the consuming holiness of the Lord. These Old Covenant arrangements point forward to the Lord Jesus Christ, the great High Priest who is also the Lamb, the one who both provides atonement and promotes and protects true worship under the New Covenant.
The Problem of Uncleanness and Its Treatment
Leviticus 11–15 addresses a crisis of ritual uncleanness that threatens Israel's access to the holy God dwelling in the tabernacle. The death of Nadab and Abihu in Leviticus 10 creates a double tension — a defiled sanctuary and a compromised priesthood — and these five chapters lay out the categories of uncleanness (diet, childbirth, skin disease, bodily discharge) along with their remedies, all grounded in the repeated divine declaration, 'Be holy, for I am holy.' The laws of clean and unclean are not arbitrary ritual hygiene but theological instruction: to be unclean is to be excluded from the presence of Yahweh, and to be made clean is to be made fit for that presence, a pattern that finds its ultimate fulfilment in the Lamb of God who takes away the sin of the world.