The Mystery Made Known: Gentile Co-Inclusion and the Assembly as Body, Sanctuary, and Bride
Thesis: The mystery hidden from the ages is disclosed in the Messiah and embodied in the assembly: the nations are co-heirs, co-body, and co-partakers of the promise; the assembly is the one new humanity, the body, the sanctuary, and the bride, displayed to the powers until the day of its presentation.
Key texts: Eph 1:9–10, 22–23; 2:11–22; 3:3–6, 10; 4:4–6, 15–16; 5:25–32; Col 1:18, 24–27; 2:2–3, 19; 3:10–11; 4:3–4; Phil 1:27; Philem 1:2, 16–17.
Introduction
The four letters speak of a mystery. The word carries the sense of a divine secret, hidden for ages, now disclosed. The secret is not an abstract doctrine; it is a people. The mystery is the Messiah — "Christ in you, the hope of the glory" (Col 1:27) — and the mystery is the inclusion of the nations in the one body: the Gentiles are co-heirs, co-body, and co-partakers of the promise in the Messiah (Eph 3:6).
The disclosure of the mystery creates a new social reality. The dividing wall between Jew and Gentile is destroyed; the two are made one new man; the once-far-off are fellow-citizens of the holy ones and members of the household of God. The assembly that results is described in the letters with an unmatched richness of images: the body of the exalted head, the sanctuary of the one God, the bride of the Messiah, the display of God's manifold wisdom to the powers.
This article traces the mystery from its hiddenness to its embodiment. It moves from the mystery's definition in Colossians and Ephesians, through the destruction of the dividing wall, to the images of the assembly — body, sanctuary, bride — and the sevenfold confession that grounds it. It closes with the assembly's most concrete form: the household churches named in the letters, where the mystery is lived.
1. The Mystery in Colossians and Ephesians
The word "mystery" belongs pre-eminently to the two cosmic letters. Each defines the content in its own register.
Colossians 1:26–27:
The mystery having been hidden from the ages and from the generations, but now it was revealed to His holy ones, to whom God willed to make known what is the wealth of the glory of this mystery among the nations, which is Christ in you, the hope of the glory.
The mystery is hidden — "from the ages and from the generations" — and now revealed. Its content is "Christ in you, the hope of the glory." The "you" are the Gentile believers of the Lycus Valley. The mystery, in Colossians, is the Messiah indwelling the nations as the hope of glory. The same letter states it again at Colossians 2:2–3: the knowledge of "the mystery of God: Christ, in whom are all the treasures of wisdom and knowledge, hidden."
Ephesians 1:9–10 states the mystery's cosmic purpose:
Having made known to us the mystery of His will, according to His good pleasure, which He purposed in him, for the administration of the fullness of the times, to sum up all things in the Christ — the things in the heavens and the things on the earth — in him.
The mystery is the summing-up of all things in the Messiah — the recapitulation of the cosmos under the exalted head. Ephesians then specifies the mystery's social content:
The mystery of the Christ ... was not made known to the sons of men in other generations, as it has now been revealed to his holy apostles and prophets in spirit — namely, that the nations are co-heirs and co-body and co-partakers of the promise in Christ Jesus through the glad-tidings. (Eph 3:4–6)
The co-joined words are the letters' own grammar of corporate solidarity: co-heirs, co-body, co-partakers. The nations do not merely benefit from the promise; they are heirs with Israel, members of the same body, partakers of the same promise. The mystery is the inclusion of the nations in the one new humanity.
The two letters agree. Colossians defines the mystery as the Messiah indwelling the nations; Ephesians defines it as the nations co-included in the one body. Both are the same disclosure: the age to come has arrived in the Messiah, and the people of the age to come are the reconciled assembly of Jew and Gentile.
2. The Dividing Wall Destroyed
Ephesians 2:11–22 is the fullest statement of the mystery's social consequences. The passage moves from the former state to the new creation:
Therefore remember that once you — the nations in flesh, who are called "the uncircumcision" by the ones called "the circumcision" made in the flesh by hands — were at that time without Christ, alienated from the citizenship of Israel and strangers to the covenants of the promise, having no hope and without God in the world. (Eph 2:11–12)
The former state is stated in the starkest terms. The nations were without the Messiah, alienated from citizenship, strangers to the covenants, without hope, without God in the world. Every negation is a boundary: the wall that excluded the nations from Israel's covenant life.
Then the new state:
But now, in Christ Jesus, you who once were far off came to be near in the blood of the Christ. For he himself is our peace, who made the two one and, in his flesh, destroyed the dividing wall of the fence — the hostility — abolishing the law of the commandments in decrees, so that in himself he might create the two into one new man, making peace, and reconcile the two in one body to God through the cross, having killed the hostility in it. (Eph 2:13–16)
The imagery is architectural and hostile. There was a dividing wall — the fence that separated the court of the Gentiles from the inner courts of the temple, inscribed with warnings against entry. The letter transposes it: the wall is the hostility between the peoples, the law of the commandments in decrees functioning as a boundary-marker. The Messiah destroyed it "in his flesh." He abolished the boundary-function of the law so that the two might become one new man. The cross is where the hostility is killed.
The purpose is not the abolition of Israel's privileges but the creation of a new humanity. The "one new man" (Eph 2:15) is the reconciled people — the Jew and the Gentile made one in the Messiah. The same letter returns to the image in the paraenesis: "put on the new man, which has been created according to God in righteousness and holiness of truth" (Eph 4:24). Colossians states the same universalism as the new man's identity: "where there is no Greek and Jew, circumcision and uncircumcision, barbarian, Scythian, slave, free, but all things and in all, Christ" (Col 3:11).
The boundary is not merely lowered; it is destroyed. The peace that results is not a truce between two parties who remain distinct; it is the creation of one new humanity, reconciled to God in one body through the cross.
3. Fellow-Citizens and Members of the Household
The new state of the once-far-off is stated in political and domestic images:
So then, you are no longer strangers and sojourners, but you are fellow-citizens of the holy ones and members of the household of God, built upon the foundation of the apostles and prophets, Christ Jesus himself being cornerstone, in whom every building, being fitted together, grows into a holy sanctuary in the lord, in whom also you are being built together into a dwelling-place of God in spirit. (Eph 2:19–22)
"Fellow-citizens" — the political image. The nations were "alienated from the citizenship of Israel" (Eph 2:12); now they are fellow-citizens of the holy ones. The citizenship of the assembly is the heavenly citizenship of Philippians 3:20 — but it is also a present civic reality, the polity of the age to come embodied in the assembly.
"Members of the household of God" — the domestic image. The strangers are now family. The household is built upon the foundation of the apostles and prophets, with the Messiah as the cornerstone. The building grows into a holy sanctuary in the lord — the temple of the new age, the dwelling-place of God in spirit.
The two images belong together. The assembly is a city and a house, a polity and a family. The political image gives the assembly its public character; the domestic image gives it its intimacy. Both are grounded in the one new man created in the cross and built upon the Messiah.
The Colossians letter supplies the parallel confession: the believers are "no longer strangers and sojourners" only in Ephesians; in Colossians, the emphasis falls on the abolition of the old divisions in the new man (Col 3:10–11). The two letters work as one: Ephesians builds the civic and domestic images; Colossians states the universalism.
4. Body, Sanctuary, Bride
The letters describe the assembly with three great images: body, sanctuary, bride.
The body. Ephesians 1:22–23: God "gave him as head over all things to the assembly, which is his body — the fullness of the One who fills all things in all." Colossians 1:18: "he is the head of the body, the assembly." The body image is organic and corporate. The assembly is not a collection of individuals who happen to believe; it is the body of the exalted head, growing from the head, held together by the joints and ligaments, "for the building up of itself in love" (Eph 4:16). The same image supplies the assembly's internal logic: "we, the many, are one body in Christ, and individually members of one another" (Rom 12:5) — but within this closed group, the body is the assembly of which the Messiah is head.
The sanctuary. Ephesians 2:20–22: the building grows "into a holy sanctuary in the lord, in whom also you are being built together into a dwelling-place of God in spirit." The temple-vocabulary of the Jerusalem cult is transferred to the assembly. The one God's dwelling is no longer a building made with hands; it is the reconciled community. The same letter speaks of the believers' bodies as members of the Messiah (Eph 5:30, citing the one-flesh union) — the sanctuary is corporate, not individual.
The bride. Ephesians 5:25–27: the Messiah "loved the assembly and gave himself over on behalf of her, so that he might consecrate her, having cleansed her by the washing of the water in the word, so that he might present the assembly to himself glorious, not having spot or wrinkle or any such thing, but that she might be holy and blameless." The bride image is eschatological: the assembly is being prepared for presentation to the Messiah at the day. The self-giving of the lord is the foundation of the bride's consecration. The letter then cites Genesis 2:24 — "the two will become one flesh" — and applies it to the Messiah and the assembly (Eph 5:31–32), naming the union "a great mystery."
The three images are one reality in three registers. The body is the organic union of the head with his people; the sanctuary is the dwelling of the one God in the reconciled community; the bride is the eschatological people prepared for presentation. None is a metaphor that leaves the assembly an abstraction; all are corporate, concrete, and ordered toward the day.
5. The Sevenfold One
Ephesians 4:4–6 grounds the assembly's unity in a single creedal sentence:
One body and one spirit — just as also you were called in one hope of your calling — one lord, one faith, one baptism, one God and Father of all, who is over all and through all and in all.
The sevenfold "one" moves from the assembly's shared realities to the divine source. The body is one because the spirit is one. The hope is one because the calling is one. The confession is one because the lord is one — the agent, the object of the one faith, the one into whom the assembly is baptized. And the ground of all is one: "one God and Father of all, who is over all and through all and in all" — the one God of Israel, the source and goal of the whole.
The confession is the letters' own account of unity. The assembly is not united by ethnicity, by ritual, or by social rank; it is united by the one spirit, the one lord, the one faith, the one baptism, and the one God. The dividing walls of the old order are replaced by the sevenfold one of the new.
The same structure appears in the letters' paraenesis. Philippians calls the assembly to stand "in one spirit, with one soul, contending alongside for the faith of the glad-tidings" (Phil 1:27). Colossians names love as "the bond of perfection" and the peace of the Messiah as the umpire in the hearts of the one body (Col 3:14–15). The unity is not uniformity; it is the concord of the members of one body, animated by one spirit, confessing one lord, grounded in one God.
6. The Display to the Powers
The assembly has a cosmic audience. Ephesians 3:10:
So that through the assembly the manifold wisdom of God might now be made known to the rulers and the authorities in the heavenlies.
The assembly exists, in part, for display. The rulers and authorities in the heavenlies — the same powers that were subjected to the exalted head (Eph 1:21) and that the assembly resists (Eph 6:12) — are shown, through the existence of the reconciled community, the manifold wisdom of God. The one new humanity, Jew and Gentile in one body, is the demonstration.
The verse follows the mystery's disclosure: the nations are co-heirs, co-body, co-partakers (Eph 3:6). The existence of that reconciled community is itself the revelation. The powers see what they could not see before: that God's wisdom had planned a people made one through the cross, and that the hostility between the peoples had been killed in the Messiah.
The display is "now" — the present age is the time of the demonstration. The assembly's life of reconciliation is the sign to the powers of the age to come. The same letter calls the believers to stand against the powers with the full-armor of God (Eph 6:10–17); the display and the conflict are the same reality — the assembly shows the powers the wisdom of God by standing in the reconciliation the cross achieved.
7. The Household as the Concrete Cell
The mystery is embodied in the most concrete form the letters know: the household assembly.
Philemon is addressed to "the assembly in your house" (Philem 1:2). Colossians 4:15 greets "the assembly at her house" — the house of Nympha. The household codes of Ephesians 5:22–6:9 and Colossians 3:18–4:1 are the assembly's daily incarnation: wives and husbands, children and fathers, slaves and masters, each addressed with reference to the lord.
The household is the primary cell of the assembly. The mystery of Gentile co-inclusion is lived in the home: a master and a slave who are brothers in the lord (Philem 1:16), a wife submitting as to the lord (Eph 5:22), a husband loving his wife as the Messiah loved the assembly (Eph 5:25), children obeying in the lord (Eph 6:1; Col 3:20), slaves serving the lord Christ (Col 3:22–24), masters knowing they have a Lord in heaven (Col 4:1).
The household codes are not detached moral lists. They are the assembly's concrete form of the new-age ethics. The same letters that announce the one new humanity call the household its school. The mystery is not an abstraction; it is lived in the most intimate and the most intractable relationships of the ancient world.
Philemon is the proof. The house assembly of Philemon is the site where the mystery's social consequences are enacted: the slave received as a brother, the debt cancelled, the master's obedience rising from love. The letter that names the assembly in Philemon's house (Philem 1:2) is the letter that shows what the mystery looks like when it is lived.
Conclusion
The mystery hidden from the ages is disclosed in the Messiah and embodied in the assembly. Colossians defines it as "Christ in you, the hope of the glory"; Ephesians specifies it as the co-inclusion of the nations — co-heirs, co-body, co-partakers of the promise. The dividing wall is destroyed in the cross; the two are made one new man; the once-far-off are fellow-citizens and members of the household of God. The assembly is the body of the exalted head, the sanctuary of the one God, the bride being prepared for presentation. The sevenfold one grounds the assembly's unity in the one God and Father of all. The assembly is displayed to the powers as the demonstration of God's manifold wisdom. And the whole mystery is lived in the household assemblies — in the house of Philemon, in the house of Nympha, in the daily relationships of the new humanity.
The next article turns to the Torah — how the letters honour the law as God's gift and shadow, how the boundary is removed, and how the instruction is transfigured in the one new humanity.
Appendix: Key Passages and Sources in the Letters
The mystery defined: Col 1:26–27 — "Christ in you, the hope of the glory"; Col 2:2–3 — "the mystery of God: Christ"; Eph 1:9–10 — the summing-up of all things; Eph 3:3–6 — the co-inclusion of the nations; Eph 3:9 — the administration of the mystery hidden from the ages.
The dividing wall destroyed: Eph 2:11–16 — the former alienation, the nearness in the blood of the Christ, the peace, the one new man, the reconciliation through the cross; Col 3:10–11 — no Greek and Jew, barbarian, Scythian, slave, free.
Fellow-citizens and members of the household: Eph 2:19–22 — the citizenship, the household, the foundation, the cornerstone, the sanctuary, the dwelling-place of God in spirit; Phil 3:20 — the citizenship in heavens.
Body, sanctuary, bride: Eph 1:22–23 — the head, the body, the fullness; Col 1:18 — the head of the body; Eph 2:20–22 — the holy sanctuary, the dwelling-place; Eph 5:25–32 — the love and self-giving, the cleansing, the presentation, the one-flesh mystery.
The sevenfold one: Eph 4:4–6 — one body, one spirit, one hope, one lord, one faith, one baptism, one God and Father of all.
The display to the powers: Eph 3:10 — the manifold wisdom of God made known through the assembly; Eph 6:12 — the conflict with the powers.
The household as the concrete cell: Philem 1:2 — the assembly in the house; Col 4:15 — the assembly at Nympha's house; Eph 5:22–6:9; Col 3:18–4:1 — the household codes; Philem 1:16 — the slave as brother.
What This Article Contributes
- A table of the assembly-images — body, sanctuary, bride, fellow-citizens, household — with their Old Testament anchors and key texts.
- A full statement of the mystery's disclosed content — the Messiah indwelling the nations, the co-inclusion of the Gentiles, the summing-up of all things.
- A reconstruction of the sevenfold-one confession — the unity of the assembly grounded in the one God and Father of all, with the one lord and the one God named distinctly.