Holiness
Holiness in scripture is first a fact about Yahweh and only afterward a quality demanded of his people, his priests, his sanctuary, and his vessels. The vocabulary moves between three closely related senses: the unapproachable purity of God himself, the set-apartness of anything claimed for his service, and the moral and ceremonial conformity asked of those who would draw near. The same Hebrew root that names the inner room of the tabernacle names the people who live around it; the same Greek root that names the Spirit who sanctifies names the believers in whom he works. The verses below trace the topic from the burning purity of Yahweh through the demand "You⁺ will be holy; for I, Yahweh your⁺ God, am holy" (Lev 19:2) to the church called "an elect race, a royal priesthood, a holy nation" (1 Pet 2:9).
Yahweh, the Holy One
The earliest songs of Israel praise Yahweh by his holiness, not by his power alone: "Who is like you, O Yahweh, among the gods? Who is like you, glorious in holiness, awesome in praises, doing wonders?" (Ex 15:11). The men of Beth-shemesh, after the ark has struck their fellow-townsmen dead, ask the question that the rest of scripture is still asking: "Who is able to stand before Yahweh, this holy God?" (1 Sam 6:20). The psalter answers by sending worshippers up the holy hill — "Exalt⁺ Yahweh our God, And worship at his holy hill; For Yahweh our God is holy" (Ps 99:9) — and David's choir charges Israel to "Worship Yahweh in holy array" (1 Chr 16:29).
The seraphim push the language to its limit. Standing above the throne, they cry, "Holy, holy, holy, is Yahweh of hosts: the whole earth is full of his glory" (Isa 6:3). The same threefold acclamation reappears in John's vision of the four living creatures, who "have no rest day and night, saying, Holy, holy, holy, [is] Yahweh, the God of hosts, He Who Was and Who Is and Who Is To Come" (Rev 4:8). The only adequate confession before the throne is "you only are holy" (Rev 15:4).
This holiness is moral as well as metaphysical. Habakkuk knows Yahweh as the one "of purer eyes than to look at evil, and who cannot look at perverseness" (Hab 1:13). And Yahweh himself fixes his holiness to his own name: "And my holy name I will make known in the midst of my people Israel; neither will I allow my holy name to be profaned anymore: and the nations will know that I am Yahweh, the Holy One in Israel" (Eze 39:7). Ben Sira keeps that name on the lips of the worshipper: "And now sing praises with all your heart, And bless the name of the Holy One" (Sir 39:35).
Be Holy, for I Am Holy
The pivot of the topic is that what is true of Yahweh is to be true of the people he claims. At Sinai he announces the program: "and you⁺ will be to me a kingdom of priests, and a holy nation" (Ex 19:6). The repeated formula in Leviticus binds the people's holiness to God's: "For I am Yahweh who brought you⁺ up out of the land of Egypt, to be your⁺ God: you⁺ will therefore be holy, for I am holy" (Lev 11:45); "Speak to all the congregation of the sons of Israel, and say to them, You⁺ will be holy; for I, Yahweh your⁺ God, am holy [in my Speech]" (Lev 19:2); "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). Holiness here is not first an inward virtue but a belonging — Yahweh has set Israel apart, and Israel is to live like a people set apart.
Peter takes this charter and lays it on the church without changing a word: "but like he who called you⁺ is holy, be⁺ yourselves also holy in all manner of living; because it is written, You⁺ will be holy; for I am holy" (1 Pet 1:15-16). The vocation is the same: "But you⁺ are an elect race, a royal priesthood, a holy nation, a people for [God's] own possession, that you⁺ may show forth the excellencies of him who called you⁺ out of darkness into his marvelous light" (1 Pet 2:9). And Hebrews ties the discipline of God's children to the same end — "but he for [our] profit, that [we] may be partakers of his holiness" (Heb 12:10) — with the corresponding charge: "Follow after peace with all men, and the sanctification without which no man will see the Lord" (Heb 12:14).
The apostolic letters keep pressing the imperative. Paul urges believers "to present your⁺ bodies, a living sacrifice, holy, acceptable to God, [which is] your⁺ spiritual service" (Rom 12:1), and presses the new-creation logic: "put on the new man, that after God has been created in righteousness and holiness of truth" (Eph 4:24). The fear of God is the climate in which holiness is brought to maturity: "Having therefore these promises, beloved, let us cleanse ourselves from all defilement of flesh and spirit, perfecting holiness in the fear of God" (2 Cor 7:1). And the eschaton is the horizon: "to the end he may establish your⁺ hearts unblamable in holiness before our God and Father, at the coming of our Lord Jesus with all his saints" (1 Thess 3:13). Peter draws the same line forward — "Seeing that these things are thus all to be dissolved, what manner of persons ought you⁺ to be in [all] holy living and godliness" (2 Pet 3:11) — and Isaiah had already glimpsed the road that runs to that day: "And a highway will be there, and a way, and it will be called The Way of Holiness; the unclean will not pass over it" (Isa 35:8).
Sanctification — How It Is Worked
When the New Testament asks how a people becomes holy, it answers in several overlapping ways. Sanctification is, first, an act of God: "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" (1 Thess 5:23). It is grounded in the Father's foreknowledge — believers are chosen "according to the foreknowledge of God the Father, in sanctification of the Spirit, to obedience and sprinkling of the blood of Jesus Christ" (1 Pet 1:2) — and traces back to the Spirit's work, who makes "the offering up of the Gentiles ... acceptable, being sanctified by the Holy Spirit" (Rom 15:16).
It is, second, secured by Christ. Jesus prays for his disciples, "Sanctify them in the truth: your speech is truth" (John 17:17), and adds, "And for their sakes I sanctify myself, that they themselves also may be sanctified in truth" (John 17:19). The cross supplies the means: "By whose will, we have been sanctified through the offering of the body of Jesus Christ once for all" (Heb 10:10); "Therefore Jesus also, that he might sanctify the people through his own blood, suffered outside the gate" (Heb 13:12). The sanctifier and the sanctified share one 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) — and the church is presented to him as one whom he himself washed: "that he might sanctify it, having cleansed it by the washing of water with the word" (Eph 5:26). Paul collapses the work into a single benefit-list: "But of him are you⁺ in Christ Jesus, who was made to us wisdom from God, and righteousness and sanctification, and redemption" (1 Cor 1:30).
It is, third, a state into which believers are placed. Paul addresses the Corinthians as "those who are sanctified in Christ Jesus, [the] called saints" (1 Cor 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" (1 Cor 6:11). Jude opens to "the called, who have been loved in God the Father and have been kept in Jesus Christ" (Jude 1:1).
And it is, fourth, a vocation believers consciously cooperate with. "For this is the will of God, [even] your⁺ sanctification, that you⁺ abstain from whoring" (1 Thess 4:3). "I speak after the manner of men because of the infirmity of your⁺ flesh: for as you⁺ presented your⁺ members [as] slaves to impurity and to iniquity to iniquity, even so now present your⁺ members [as] slaves to righteousness to sanctification. ... But now being made free from sin and being made slaves to God, you⁺ have your⁺ fruit to sanctification, and the end eternal life" (Rom 6:19, 22). "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" (2 Tim 2:21). The ritual antecedent is already in the Old Testament: "And Joshua said to the people, Sanctify yourselves; for tomorrow Yahweh will do wonders among you⁺" (Josh 3:5); and at the cleansing of the temple under Hezekiah, "Hear me, you⁺ Levites; now sanctify yourselves, and sanctify the house of Yahweh, the God of your⁺ fathers, and carry forth the filthiness out of the holy place" (2 Chr 29:5). Ben Sira's intercessory plea is in the same idiom — "As you have sanctified yourself in us before their eyes, So sanctify yourself in them before our eyes" (Sir 36:4) — and his comment on the calendar quietly grounds the whole logic: "Some of them he exalted and hallowed, And some of them he made ordinary days" (Sir 33:9).
The Holy and the Common
Underneath all the imperatives is a single distinction. Yahweh charges the priests "that you⁺ may make a distinction between the holy and the common, and between the unclean and the clean" (Lev 10:10) — and indicts them, through Ezekiel, when they fail: "Her priests have done violence to my law, and have profaned my holy things: they have made no distinction between the holy and the common, neither have they caused men to discern between the unclean and the clean, and have hid their eyes from my Sabbaths, and I am profaned among them" (Eze 22:26). The line between holy and common is not a private taste; it is the architecture of approach to a holy God, and erasing it is itself a profanation.
The Holy Place and the Holy of Holies
That distinction is built into the sanctuary itself. The veil at the heart of the tabernacle is the spatial form of holiness: "And you will hang up the veil under the clasps, and will bring in there inside the veil the ark of the testimony: and the veil will separate to you⁺ between the holy place and the most holy" (Ex 26:33). Hebrews remembers it the same way: "And after the second veil, the tabernacle which is called the Holy of holies" (Heb 9:3). When Solomon installs the ark, "the priests brought in the ark of the covenant of Yahweh to its place, into the oracle of the house, to the most holy place, even under the wings of the cherubim" (1 Kings 8:6); the inner room itself is built to those proportions — "And he made the most holy house: its length, according to the width of the house, was twenty cubits, and its width twenty cubits; and he overlaid it with fine gold" (2 Chr 3:8).
The holy place outside the veil has its own protocols. Aaron carries the names of the tribes on his breastplate "when he goes in to the holy place, for a memorial before Yahweh continually" (Ex 28:29); the priests' grain-offering is "eaten without leaven in a holy place; in the court of the tent of meeting they will eat it" (Lev 6:16). When the second temple is desecrated, the writer of 1 Maccabees uses the same vocabulary in lament: "And he proudly entered into the sanctuary, and took away the golden altar, and the lampstand of light, and all the vessels of it" (1 Macc 1:22); "The holy places have come into the hands of strangers: Her temple has become as a man without honor" (1 Macc 2:8); "And they shed innocent blood round about the sanctuary, And defiled the holy place" (1 Macc 1:37); "And to defile the sanctuary, and the holy things" (1 Macc 1:46); "And they saw the sanctuary desolate, and the altar profaned, and the gates burned, and shrubs growing up in the courts as in a forest" (1 Macc 4:38). Restoration is described as the inverse: "And they built up the holy places, and the things that were within the temple: and they sanctified the courts" (1 Macc 4:48).
Holy Vessels
The same logic of belonging extends to the implements. The Kohathites are charged with "the ark, and the table, and the lampstand, and the altars, and the vessels of the sanctuary with which they minister, and the screen and its service" (Num 3:31). When Solomon's temple is dedicated, "they brought up the ark of Yahweh, and the tent of meeting, and all the holy vessels that were in the Tent" (1 Kings 8:4). When it is destroyed, those vessels travel with the exile: "Also Cyrus the king brought forth the vessels of the house of Yahweh, which Nebuchadnezzar had brought forth out of Jerusalem, and had put in the house of his gods" (Ezra 1:7); Jeremiah promises against false prophets, "Within two full years I will bring again into this place all the vessels of Yahweh's house, that Nebuchadnezzar king of Babylon took away from this place, and carried to Babylon" (Jer 28:3). The depth of the offence at Belshazzar's feast lies precisely in the misuse of holy vessels: "Belshazzar, while he tasted the wine, commanded to bring the golden and silver vessels which Nebuchadnezzar his father had taken out of the temple which was in Jerusalem; that the king and his lords, his wives and his concubines, might drink from them" (Dan 5:2). When the Maccabees rebuild, they "glorified the sanctuary, and multiplied the vessels of the holy places" (1 Macc 14:15).
The high priest wears the principle on his head. "And they made the plate of the holy crown of pure gold, and wrote on it a writing, like the engravings of a signet, HOLY TO YAHWEH" (Ex 39:30). Zechariah pushes that inscription out of the priest's chamber and across the whole landscape of the restored city: "In that day there will be on the bells of the horses, HOLY TO YAHWEH; and the pots in Yahweh's house will be like the bowls before the altar. Yes, every pot in Jerusalem and in Judah will be holy to Yahweh of hosts ... and in that day there will be no more a Canaanite in the house of Yahweh of hosts" (Zech 14:20-21). The eschatological promise is that the line between the holy and the common will not be erased but extended — everything will be on the holy side of it.
Ceremonial Purification
Approach to holy places and holy objects requires cleansing. Yahweh tells the warriors returning from Midian, "And as to every garment, and all that is made of skin, and all work of goats' [hair], and all things made of wood, you⁺ will purify yourselves" (Num 31:20). The pattern carries into the gospel period: "Now the Passover of the Jews was at hand: and many went up to Jerusalem out of the country before the Passover, to purify themselves" (John 11:55). Purification is not a private rite of conscience; it is the proper preparation for entering Yahweh's presence with the rest of his people.
Separation from the Profane
The flip-side of belonging to a holy God is keeping clear of what would defile that belonging. Isaiah's command to the returning exiles is the paradigm: "Depart⁺, depart⁺, go⁺ out from there, touch no unclean thing; go⁺ out of the midst of her; cleanse yourselves, you⁺ who bear the vessels of Yahweh" (Isa 52:11). Paul applies that same charge to the Corinthian church: "Don't be unequally yoked with unbelievers: for what fellowship have righteousness and iniquity? Or what communion has light with darkness?" (2 Cor 6:14); "Therefore Come⁺ out from among them, and be⁺ separate, says the Lord, And touch no unclean thing; And I will receive you⁺" (2 Cor 6:17). The Ephesian charge is the same: "and have no fellowship with the unfruitful works of darkness, and even better, reprove them as well" (Eph 5:11). And Peter casts the church as resident aliens whose loyalties are elsewhere: "Beloved, I urge you⁺ as sojourners and pilgrims, to abstain from fleshly desires, which war against the soul" (1 Pet 2:11).
The deepest form of this separation is christological. Of his disciples Jesus says, "They are not of the world, even as I am not of the world" (John 17:16). Holiness, in the New Testament, is not the cultivation of a private moral interior; it is the church's continued participation in the difference Christ himself maintains from the world.
Boldness to Enter
Yet the holiness that holds the world at arm's length opens the throne to those whom Christ has sanctified. The veil that separated the holy from the most holy is no longer the last word. "Let us therefore draw near with boldness to the throne of grace, that we may receive mercy, and may find grace to help [us] in time of need" (Heb 4:16). The geography of approach is rewritten: "Having therefore, brothers, boldness to enter into the holy place by the blood of Jesus" (Heb 10:19). Paul says the same in fewer words: "in whom we have boldness and access in confidence through our faith in him" (Eph 3:12). The God who can only be called "thrice holy" is the same God who calls his people up the holy hill — and now sends them through the veil.
Glorious in Holiness
The arc of the topic comes back to where it started: with the holiness of God himself, sung by Israel after the sea (Ex 15:11) and sung again in John's vision around the throne. "Who will not fear, O Lord, and glorify your name? For you only are holy; for all the nations will come and worship before you; for your righteous acts have been made manifest" (Rev 15:4). Israel's command, the apostolic command, the priestly distinction between holy and common, the vessels marked HOLY TO YAHWEH, the sanctification worked by the Spirit and secured by the blood — all of them follow from, and answer to, the holiness of the one before whom the seraphim cover their faces. Holiness in scripture is finally not a virtue the people produce but a participation: "for [our] profit, that [we] may be partakers of his holiness" (Heb 12:10).