Sanctification

To sanctify is to set apart — to mark off as holy, withdrawn from common use, given over to Yahweh. Scripture uses the verb in three connected registers: things consecrated by anointing, persons consecrated by command and by atonement, and the inner moral transformation by which the consecrated people are conformed to the holiness of the One who set them apart. The same verb that anoints the altar in Exodus stands behind Paul's prayer that the Thessalonians be sanctified wholly and behind Hebrews' claim that Christ's people have been sanctified once for all through the offering of his body.

Yahweh the Sanctifier

The fixed refrain of the Sinai legislation is that sanctification belongs to Yahweh as his own act. "I am Yahweh who sanctifies you⁺" recurs as the signature of the law of holiness (Ex 31:13; Lev 22:9). The same formula is sealed by Yahweh's holiness: "for I Yahweh, who sanctify you⁺, am holy" (Lev 21:8), and is extended over the priestly code of Lev 21:1-23, which closes by repeating "I am Yahweh who sanctifies them" (Lev 21:23). The prophets carry the formula forward. Jeremiah is told, "Before I formed you in the belly I knew you, and before you came forth out of the womb I sanctified you; I have appointed you a prophet to the nations" (Jer 1:5). Ezekiel sees the formula stretched to the eschatological horizon: "And the nations will know that I am Yahweh who sanctifies Israel, when my sanctuary will be in the midst of them forevermore" (Eze 37:28). Sanctification is not first what Israel does to itself; it is what Yahweh does to Israel, and Israel's sanctifying acts are derivative of his.

Set Apart from the Peoples

The aim of Yahweh's sanctifying work is a people distinguished from all other peoples. "And you⁺ will be holy to me: for I, Yahweh, am holy, and have set you⁺ apart from the peoples, that you⁺ should be mine" (Lev 20:26). Moses presses the same logic at the tent of meeting: "Is it not in that you go with us, so that we are distinguished, I and your people, from all the people who are on the face of the earth?" (Ex 33:16). The firstborn are claimed up front as a sample of the whole — "Sanctify to me all the firstborn, whatever opens the womb among the sons of Israel, both of man and of beast: it is mine" (Ex 13:2) — and at Sinai the entire people is sanctified together: "Go to the people, and sanctify them today and tomorrow, and let them wash their garments" (Ex 19:10), with Moses then descending and "sanctifying the people" so that "they washed their garments" (Ex 19:14).

The Consecration of Holy Things

The verb is used in the same breath of objects. The anointing oil hallows the tabernacle, "and all its furniture: and it will be holy"; it sanctifies the altar of burnt-offering "and the altar will be most holy"; it sanctifies the basin and its base (Ex 40:9-11). The altar then becomes communicatively holy: "Seven days you will make atonement for the altar, and sanctify it: and the altar will be most holy; whatever touches the altar will be holy" (Ex 29:37), a transferable holiness extended over the anointed vessels (Ex 30:29). Holiness here is not a moral predicate but a state — a thing given to Yahweh and contagious to whatever brushes against it.

Sanctified by Glory

A second mode of sanctification is the indwelling presence. "And there [my Speech] will meet with the sons of Israel; and [the Tent] will be sanctified by my glory" (Ex 29:43). The narrative redeems the promise: "Then the cloud covered the tent of meeting, and the glory of Yahweh filled the tabernacle. And Moses wasn't able to enter into the tent of meeting, because the cloud stayed on it, and the glory of Yahweh filled the tabernacle" (Ex 40:34-35). What anointing oil typifies, the glory enacts: holiness is conferred by Yahweh's actual presence, and that presence makes its dwelling so holy that even Moses cannot cross the threshold.

The Imperative to Sanctify Oneself

Because Yahweh sanctifies, the people are commanded to sanctify themselves — not to manufacture holiness, but to come into alignment with the holiness Yahweh imparts. The priests at Sinai are warned, "And let the priests also, that come near to Yahweh, sanctify themselves, or else Yahweh will break forth on them" (Ex 19:22). On the eve of the manna-and-quail episode, Moses is told, "Sanctify yourselves against tomorrow, and you⁺ will eat flesh" (Num 11:18). Joshua charges the people on the brink of the Jordan: "Sanctify yourselves; for tomorrow Yahweh will do wonders among you⁺" (Josh 3:5). Samuel sanctifies Jesse and his sons before the sacrifice at Bethlehem (1Sam 16:5). Hezekiah commands the Levites at the temple's reopening: "now sanctify yourselves, and sanctify the house of Yahweh, the God of your⁺ fathers, and carry forth the filthiness out of the holy place" (2Chr 29:5). The Maccabean restoration repeats the same gesture in miniature: "And they built up the holy places, and the things that were within the temple: and they sanctified the courts" (1Mac 4:48). Ben Sira presses the imperative back upon Yahweh in prayer: "As you have sanctified yourself in us before their eyes, So sanctify yourself in them before our eyes" (Sir 36:4); and he marks the same logic on the calendar — "Some of them he exalted and hallowed, And some of them he made ordinary days" (Sir 33:9).

Sanctified by Christ's Self-Offering

In the New Testament the source of sanctification is identified with Christ's own act. Jesus tells the Father, "Sanctify them in the truth: your speech is truth" (John 17:17), and immediately makes himself the means: "And for their sakes I sanctify myself, that they themselves also may be sanctified in truth" (John 17:19). Paul names the same Christ as the people's sanctification: Christ Jesus "was made to us wisdom from God, and righteousness and sanctification, and redemption" (1Cor 1:30). Hebrews insists on the once-for-all character of the offering: "By whose will, we have been sanctified through the offering of the body of Jesus Christ once for all" (Heb 10:10); "For by one offering he has perfected forever those who are sanctified" (Heb 10:14). The blood that sanctifies is Christ's own: "Therefore Jesus also, that he might sanctify the people through his own blood, suffered outside the gate" (Heb 13:12). The same blood "will cleanse our conscience from dead works to serve the living God" (Heb 9:14). And in the apocalyptic vision, the sanctified are "those who come out of the great tribulation, and they washed their robes, and made them white in the blood of the Lamb" (Rev 7:14).

Sanctification by the Spirit

Sanctification is named jointly as the Spirit's work. Paul's offering of the Gentiles is "made acceptable, being sanctified by the Holy Spirit" (Rom 15:16). Peter writes to those chosen "according to the foreknowledge of God the Father, in sanctification of the Spirit, to obedience and sprinkling of the blood of Jesus Christ" (1Pet 1:2). Paul thanks God that he "chose you⁺ from the beginning to salvation in sanctification of the Spirit and belief of the truth" (2Th 2:13), the called destined "to the obtaining of the glory of our Lord Jesus Christ" (2Th 2:14). The same Spirit that anoints Christ anoints those joined to him: "Now he who establishes us with you⁺ in Christ, and anointed us, is God; who also sealed us, and gave [us] the security deposit of the Spirit in our hearts" (2Cor 1:21-22). The vocabulary of altar and oil has migrated to the believer.

The Sanctified Ones

Those whom God sets apart Scripture calls the sanctified. Paul addresses Corinth as "those who are sanctified in Christ Jesus, [the] called saints" (1Cor 1:2), and reminds them, "And such were some of you⁺: but you⁺ were washed, but you⁺ were sanctified, but you⁺ were justified in the name of the Lord Jesus Christ, and in the Spirit of our God" (1Cor 6:11). Hebrews insists that sanctifier and sanctified share a single origin: "For both he who sanctifies and those who are sanctified are all of one: for which cause he is not ashamed to call them brothers" (Heb 2:11). Jude greets the same body as "the called, who have been loved in God the Father and have been kept in Jesus Christ" (Jude 1:1). And Paul says of the church that Christ "delivered himself up for it; that he might sanctify it, having cleansed it by the washing of water with the word" (Eph 5:25-26), with the result clause: "that he might present the church to himself a glorious [church], not having spot or wrinkle or any such thing; but that it should be holy and without blemish" (Eph 5:27). Election is named to the same end: "he chose us in him before the foundation of the world, that we should be holy and without blemish before him in love" (Eph 1:4).

Sanctification Enjoined

The OT pattern of "sanctify yourselves" carries directly into the NT exhortations. Sanctification is named as the will of God for believers: "For this is the will of God, [even] your⁺ sanctification, that you⁺ abstain from whoring; that each of you⁺ know how to possess himself of his own vessel in sanctification and honor" (1Th 4:3-4). Paul's image of the cleansed vessel echoes the tabernacle: "If a man therefore purges himself from these, he will be a vessel to honor, sanctified, meet for the master's use, prepared to every good work" (2Tim 2:21). John's pastoral promise carries the cleansing forward into the believer's daily life: "If we confess our sins, he is faithful and righteous to forgive us our sins, and to cleanse us from all unrighteousness" (1Joh 1:9).

Growth into the Fullness

Sanctification has a forward edge. The fatherly discipline of God shapes its end: "he for [our] profit, that [we] may be partakers of his holiness" (Heb 12:10). Peter names the same end in different vocabulary — believers "may become partakers of the divine nature, having escaped from the corruption that is in the world by desire" (2Pet 1:4), with grace and peace "multiplied in the knowledge of God and Jesus our Lord" (2Pet 1:2-3). The corporate trajectory is set in Ephesians: the church is built up "for the preparing of the saints, to the work of service, to the building up of the body of Christ: until we all attain to the unity of the faith, and of the knowledge of the Son of God, to a full-grown man, to the measure of the stature of the fullness of Christ" (Eph 4:12-13), growing up "in all things into him, who is the head, [even] Christ" (Eph 4:15-16), and "filled to all the fullness of God" (Eph 3:19). Hebrews names the inner mechanism of the same growth: God works "in us that which is well-pleasing in his sight, through Jesus Christ" (Heb 13:21).

Sanctified Wholly

The umbrella's most sweeping statement frames the whole movement as one act. Paul's benediction assumes that the same God who sanctifies Israel and who sanctifies through Christ and Spirit will complete the work in the believer: "And may the God of peace himself sanctify you⁺ wholly; and may your⁺ spirit and soul and body be preserved entire, without blame at the coming of our Lord Jesus Christ" (1Th 5:23). Sanctification begins in Yahweh's setting his people apart, runs through Christ's offering and the Spirit's work, lays its imperative on the conduct of the body, and ends — at his coming — in a people preserved entire and without blame.