God requires that all things pertaining to worship and service be done exactly as He stipulates, because sanctification, the setting apart of specific items, persons, and practices, determines what qualifies as holy and therefore acceptable to Him. Holy things originate with God, meet the precise criteria He establishes, and remain recognizable to Him only when they retain their designated source and purpose. Any addition, subtraction, or substitution renders them strange or profane, deficient in relationship to His standard and therefore unacceptable. This principle appears first in the final warning of Scripture that nothing may be added to or removed from the words of prophecy, a command repeated in Deuteronomy and Proverbs with the assurance that exact obedience brings both protection and good success. The same requirement governs the censers offered by Korah and his company. Although the censers themselves were holy because they had been presented before the Lord, the fire placed in them was not, having been taken from an unauthorized source. The resulting judgment demonstrated that only the fire originating from God on the altar could be recognized as holy. That fire, once kindled by divine action, was never to be extinguished, its perpetual burning symbolizing the necessity of maintaining the passion and obedience that alone render service authentic. The same distinction applies to incense. Only the precise compound prescribed by God could be offered on the golden altar; any duplicate made for personal use incurred the death penalty, underscoring that what is most holy belongs exclusively to God and may not be replicated or redirected. Offerings follow the identical rule: only what God Himself has first given may be returned to Him, because only His provision carries the holiness required for acceptance. Human attempts to supply their own righteousness, whether in worship, clothing, conduct, or offerings, remain strange and unrecognized. Consequently, a person or object may be holy in one respect and strange in another, depending on whether the specific action performed aligns with God's sanctifying designation. Korah's Levites were set apart for tabernacle service yet remained strangers when they presumed priestly duties reserved for Aaron's descendants. The same logic governs participation in the Passover and attendance at the marriage feast: circumcision and the supplied wedding garment respectively symbolize the conversion and righteousness that alone render one authentic before God. The broader message is that God's stipulations are not arbitrary but expressions of His care, intended to secure success and protection for those who submit in faith. Because dramatic interventions no longer occur, greater trust and fear of God are now required to accept what has been set apart, to understand its application, and to perform only what God has sanctified for each responsibility.

God actively sanctifies people and institutions according to His eternal purpose, beginning with individuals such as Noah and Moses and progressing to an entire nation. He chose Isaac before birth, named him, and established His covenant through him rather than Ishmael. From Isaac's line He selected Jacob, then set Levi apart for the priesthood, Judah for governance, and Joseph for preservation of the family. Through Moses, God formed the descendants of Abraham into the nation of Israel and declared the entire people holy, a special treasure set apart by marriage to Himself. This national holiness conferred protection and prosperity yet also imposed visible responsibilities: destruction of pagan altars, refusal of covenants or intermarriage, and exclusive loyalty to His commandments. Israel largely failed these duties, living like surrounding nations while still receiving unmerited grace because of God's oath. With the coming of Christ a further development occurs. Jesus announces the formation of the church, an institution never before present in history yet planned from the foundation of the world. The Father personally chooses each member, draws that person to the Son, and imparts the Holy Spirit, thereby initiating a new creation. This spiritual sanctification transforms character and mind rather than merely consecrating objects or a physical nation. Members become living stones fitted into a holy temple and parts of Christ's body, participating in the very holiness of God. Throughout every stage the driving force remains God's sovereign initiative; human contribution, though required, remains negligible beside His creative work.

The holy things consist of offerings and items that the children of Israel devote and hallow to the Lord. These devoted things are brought to the priesthood for presentation before God, and the priests receive portions of certain offerings as their food. Because the priests handle and consume what has been set apart for the Lord, they must first separate themselves from uncleanness of any kind, whether contracted through contact with the dead, bodily discharges, creeping things, or other defiling sources. Until they wash and become clean at evening, they are forbidden to eat of the holy things, lest they profane the name of the Lord in the very items consecrated to Him. This requirement underscores that the defilement symbolized by ritual uncleanness renders a person unfit to serve with what belongs exclusively to God. The same principle extends to the entire church, designated as a royal priesthood. Just as the Aaronic priests could not approach the holy things while contaminated, the spiritual priesthood today must maintain moral, ethical, and spiritual cleanliness to offer acceptable sacrifices and to show forth God's praises. Failure to guard against contamination allows the world's defilement to transfer to the one handling the holy things, rendering both the person and the offering unacceptable. The command to remain clean while dealing with the holy things therefore reinforces the larger responsibility of separation. It reminds the sanctified ones of their distinct identity, supplies a visible witness to the world, and protects the integrity of what has been devoted to God. Proper observance in both the manner and the understanding with which these responsibilities are kept produces the fruit that glorifies the Lord and keeps the priesthood unspotted.

The Day of Atonement ritual in Leviticus 16 limits the high priest's atoning work to the children of Israel and their holy things. The passage specifies that atonement is made for the holy sanctuary inside the tabernacle, the tabernacle of meeting itself, the altar, the priests, and all the people of the congregation. These boundaries exclude the surrounding nations and everything belonging to them. Because the type foreshadows the reality, Christ's sacrifice follows the same pattern of limitation. His blood covers only those whom the Father calls and draws to the Son, the particular group identified as the sheep, the elect, the church, and the firstfruits. The same restriction appears in the New Testament statements that Christ gave Himself for the church He purchased with His own blood, for those being sanctified, and for the Israel of God. Thus the atonement remains confined to a designated people and their holy things until the time when God opens salvation to others in their appointed order.