The Church in the Epistles
Body, Household, Temple, Flock, and Fellowship — How the Letters Picture the People of God
An Exegetical Study for Adult Bible Class

Introduction: Living Pictures of the Church

The New Testament letters almost never pause to define the church in the language of a dictionary. Instead, they picture it. Paul, Peter, and John reach again and again for images drawn from ordinary life — a human body, a family in its home, a temple under construction, a flock on the hillside, a partnership of shared goods — and each image opens a different window onto the same reality. No single picture says everything. A body speaks of organic union but not of holiness; a temple speaks of holiness but not of warmth; a family speaks of belonging but not of mission. Laid side by side, the metaphors form a composite portrait that no lone image could carry.

This study traces five of these portraits as they appear across the Epistles: the body of Christ, the household and family of God, the temple and building of God, the flock of God, and the fellowship of the saints. Along the way it attends to the Greek words the writers chose, because the images are carried by particular terms — σῶμα, οἶκος, ναός, ποίμνιον, κοινωνία — each with its own weight and history. The Greek is a doorway, not a destination; every term is given in plain English so that no reader is left dependent on the alphabet to follow the argument.

One conviction governs the whole. Behind every metaphor stands a single reality: the union of believers with the risen Christ and, in Him, with one another. The church is not first an organization that people join but a body into which they are baptized, a family into which they are born, a building into which they are fitted, a flock the Shepherd has purchased. The pictures are not decorative. They are the New Testament’s way of teaching a congregation who it actually is.

The Body of Christ

Of all the images, the body is the most developed and the most distinctly Christian. It appears wherever Paul wants to hold together two truths that pull in opposite directions — that the church is genuinely one, and that it is genuinely many. The word is σῶμα (G4983), the ordinary Greek term for a physical body, which Paul lifts into a description of the corporate life of believers united to Christ.[1]

The clearest statement of the paradox comes to a divided Corinthian congregation:

1 Corinthians 12:12: For as the body is one and has many members, but all the members of that one body, being many, are one body, so also is Christ.

1 Corinthians 12:27: Now you are the body of Christ, and members individually.

The logic runs in both directions at once. Because the body is one, no member may be dispensed with or driven out; because the body is many, no member may be uniform with every other. Paul presses each side against a different Corinthian failure — against the member who feels useless (“Because I am not a hand, I am not of the body”), and against the member who feels self-sufficient (“I have no need of you”). The single organism has no room for either despair or contempt.

What makes the members one is not shared temperament or common background but a shared baptism in the Spirit:

1 Corinthians 12:13: For by one Spirit we were all baptized into one body — whether Jews or Greeks, whether slaves or free — and have all been made to drink into one Spirit.

The same picture appears in Romans, where Paul draws from it a plain conclusion about how members are to regard one another:

Romans 12:4–5: For as we have many members in one body, but all the members do not have the same function, so we, being many, are one body in Christ, and individually members of one another.

In Ephesians and Colossians the image gains a further dimension. The body is not merely an organism; it is an organism with a head, and the head is Christ:

Colossians 1:18: And He is the head of the body, the church, who is the beginning, the firstborn from the dead, that in all things He may have the preeminence.

Ephesians 4:15–16: but, speaking the truth in love, may grow up in all things into Him who is the head — Christ — from whom the whole body, joined and knit together by what every joint supplies, according to the effective working by which every part does its share, causes growth of the body for the edifying of itself in love.

Three convictions emerge. First, the church’s unity is organic, not merely organizational — members belong to one another the way a hand belongs to an arm, not the way names belong on a roster. Second, every member is necessary: the argument of 1 Corinthians 12 exists precisely to dignify the parts that seem least impressive. Third, all life and growth flow from the head: the body does not generate its own vitality but receives it from Christ and grows up “into Him.” A congregation formed by this picture will neither tolerate spectators nor idolize its most visible parts; it will expect every joint to supply something, and it will look for its increase to Christ rather than to technique.

The Household and Family of God

If the body speaks of union, the household speaks of belonging. The governing term is οἶκος (G3624), which means both the house as a dwelling and the household as the family that lives in it — and the New Testament exploits both senses.[2] Paul tells Timothy that his very purpose in writing is to shape conduct within this household:

1 Timothy 3:15: but if I am delayed, I write so that you may know how you ought to conduct yourself in the house of God, which is the church of the living God, the pillar and ground of the truth.

The church is “the house of God” — His household, the family that bears His name and lives under His roof. Ephesians makes the same point to Gentile believers who once stood outside, using the related word οἰκεῖος (G3609), a member of a household:

Ephesians 2:19: Now, therefore, you are no longer strangers and foreigners, but fellow citizens with the saints and members of the household of God.

The movement of the verse is from exclusion to family membership: not guests, not resident aliens, but household members with a place at the table. This is why the letters so naturally call believers “brethren” — ἀδελφοί (G80), brothers and sisters — hundreds of times.[3] The word is not a formality; it assumes that conversion has made strangers into siblings who share one Father. Paul can therefore reason from the family bond to concrete obligation:

Galatians 6:10: Therefore, as we have opportunity, let us do good to all, especially to those who are of the household of faith.

The household image also carries a note of accountability. A family under one father lives by that father’s order, and Peter can speak of God’s discipline beginning within His own house:

1 Peter 4:17: For the time has come for judgment to begin at the house of God; and if it begins with us first, what will be the end of those who do not obey the gospel of God?

Belonging, then, is not sentimental. To be in the household of God is to be genuinely at home — cared for, named, seated among brothers and sisters — and at the same time genuinely under the order of the Father’s house. A congregation shaped by this picture treats its members as family rather than clientele: it practices hospitality, bears one another’s burdens as kin, and holds one another with the affectionate accountability that belongs to a well-ordered home.

The Temple and Building of God

The household is where the family lives; the temple is where God lives. Here two related terms come into play. ναός (G3485) is the sanctuary, the inner dwelling where deity was believed to reside, and Paul uses it to describe what the gathered church has become.[4] οἰκοδομή (G3619) is the building or the act of building it up.[5] To a Corinthian church tempted to treat itself casually, Paul issues a startling reminder:

1 Corinthians 3:16–17: Do you not know that you are the temple of God and that the Spirit of God dwells in you? If anyone defiles the temple of God, God will destroy him. For the temple of God is holy, which temple you are.

The “you” here is plural: Paul is not yet speaking of the individual believer’s body (that comes in chapter 6) but of the congregation as God’s sanctuary. The Spirit who once filled the tabernacle and the temple now indwells the assembled people, and that indwelling makes the community holy — which is why defiling it is no small matter. The same passage opens with the building under construction:

1 Corinthians 3:9: For we are God’s fellow workers; you are God’s field, you are God’s building.

Ephesians completes the picture, naming the foundation, the cornerstone, and the ongoing construction:

Ephesians 2:20–22: having been built on the foundation of the apostles and prophets, Jesus Christ Himself being the chief cornerstone, in whom the whole building, being fitted together, grows into a holy temple in the Lord, in whom you also are being built together for a dwelling place of God in the Spirit.

The chief cornerstone is ἀκρογωνιαῖος (G204), the stone set at the building’s angle to align every course that follows.[6] Everything is measured against Christ. The apostolic and prophetic testimony forms the foundation; the believers are the stones; and — remarkably — the building is not static but “grows,” a living temple still rising. Peter presses the same image and adds that the stones are alive:

1 Peter 2:5: you also, as living stones, are being built up a spiritual house, a holy priesthood, to offer up spiritual sacrifices acceptable to God through Jesus Christ.

Three themes stand out. First, God’s presence now rests on a people rather than a place — the Spirit indwells the community, and that is where God is met. Second, that presence demands holiness; a temple is by definition set apart, and a church that forgets this treats as common what God has made sacred. Third, the temple is built together — no stone is a temple by itself; each is fitted to the others and to the cornerstone. The congregation that grasps this guards its corporate holiness, resists whatever would defile the common life, and understands every act of building one another up as work on the dwelling place of God.

The Flock of God

The pastoral image reaches back through the whole of Scripture — the Lord as the shepherd of Israel, the promised Shepherd of Ezekiel 34, and supremely the Good Shepherd who lays down His life for the sheep and gathers “one flock” under “one shepherd” (John 10:16). The Epistles take up this inheritance and apply it directly to the leadership and care of the congregation. The key word is ποίμνιον (G4168), the flock.[7] Peter charges the elders:

1 Peter 5:2–3: Shepherd the flock of God which is among you, serving as overseers, not by compulsion but willingly, not for dishonest gain but eagerly; nor as being lords over those entrusted to you, but being examples to the flock.

Every phrase guards the flock from a particular danger in its shepherds: reluctance, greed, and domineering. The elders are undershepherds, and their authority is the authority of an example rather than a lord. Their accountability is fixed by the One over them:

1 Peter 5:4: and when the Chief Shepherd appears, you will receive the crown of glory that does not fade away.

Two things anchor the image. First, the flock is not the shepherds’ own; it is “the flock of God.” Paul makes the ownership explicit and grounds it in the cross:

Acts 20:28: Therefore take heed to yourselves and to all the flock, among which the Holy Spirit has made you overseers, to shepherd the church of God which He purchased with His own blood.

Second, human shepherds serve beneath a single Chief Shepherd (ἀρχιποίμην). The sheep finally belong to Christ, who bought them, and the elders will answer to Him for their care. The flock image therefore says two things at once to a congregation: leadership is shepherding — patient feeding, guarding, and leading by example, never lording — and the people are sheep who may entrust themselves to that care because behind the undershepherds stands the Shepherd who gave His life for them.

The Fellowship of the Saints

The final image is less a picture than a shared life. The word is κοινωνία (G2842), which the older versions render “fellowship” or “communion” and which means participation together — a common holding, a partnership, a sharing-in.[8] It is more than friendly association; it names the deep mutual participation of those who share the same Christ. Its root is vertical before it is horizontal — first fellowship with God, then fellowship with one another:

1 Corinthians 1:9: God is faithful, by whom you were called into the fellowship of His Son, Jesus Christ our Lord.

1 John 1:3: that which we have seen and heard we declare to you, that you also may have fellowship with us; and truly our fellowship is with the Father and with His Son Jesus Christ.

Because believers share in Christ and in His Spirit, they share a common life with each other. John makes the two inseparable:

1 John 1:7: But if we walk in the light as He is in the light, we have fellowship with one another, and the blood of Jesus Christ His Son cleanses us from all sin.

Paul appeals to this shared participation as the ground of unity, listing “fellowship of the Spirit” among the deepest motives for a congregation to be of one mind:

Philippians 2:1: Therefore if there is any consolation in Christ, if any comfort of love, if any fellowship of the Spirit, if any affection and mercy.

The same word carries a strongly practical edge. κοινωνία can name the partnership of shared work and the contribution of shared goods — Paul thanks the Philippians for their “fellowship in the gospel” (Philippians 1:5), meaning their partnership in the mission, and elsewhere uses the word group for the offering gathered for the poor. Fellowship, biblically, is never merely a feeling. It is participation that shows itself in shared conviction, shared mission, and shared possessions. A congregation formed by this word will measure its fellowship not by the warmth of its gatherings alone but by the reality of its partnership — in the gospel, in one another’s burdens, and in tangible generosity.

Synthesis: One Church, Many Pictures

Set side by side, the five images do not compete; they interlock, each supplying what the others leave unsaid.

The body teaches organic union and mutual necessity — many members, one organism, Christ the head. The household teaches relational belonging — strangers made family, seated in the Father’s house as brothers and sisters. The temple teaches holy indwelling — a people made God’s dwelling place, set apart, built together on the cornerstone. The flock teaches shepherded care — a people purchased by Christ, led and guarded by undershepherds beneath the Chief Shepherd. The fellowship teaches shared participation — a common life in Christ that overflows into shared mission and goods.

Certain threads run through them all. Every image is irreducibly corporate: not one of them can be lived alone. A solitary member is a contradiction, a single stone is not a temple, one sheep is not a flock, and there is no fellowship of one. Every image is Christ-centered: He is the head of the body, the cornerstone of the temple, the Chief Shepherd of the flock, the Son into whose fellowship believers are called, the Lord whose household they are. Every image is Spirit-indwelt: the one Spirit baptizes into the body, dwells in the temple, and constitutes the fellowship. And every image issues in mutual responsibility: members supply what every joint needs, family members do good to the household, living stones are built together, sheep follow the shepherd’s example, partners share the load.

Behind all five stands the single reality they were chosen to express — union with the risen Christ. The pictures are the New Testament’s patient way of teaching a congregation to see itself as it truly is: not a voluntary society of like-minded individuals, but the body, the household, the temple, the flock, and the fellowship of God.

For Reflection and Discussion

Discussion Questions

1. Five pictures were surveyed — body, household, temple, flock, fellowship. Which one most naturally describes how our congregation already thinks of itself, and which one feels most foreign? What might that reveal?
2. Paul argues in 1 Corinthians 12 that the members who feel useless and the members who feel self-sufficient are both mistaken. Where do you see each of those temptations in church life today?
3. To belong to the “household of God” is to be family, not clientele. In practical terms, what is the difference between a church that treats people as family and one that treats them as an audience?
4. The temple image insists that God’s presence now rests on a people and makes that people holy. How should knowing that “you (plural) are the temple of God” change the way a congregation conducts its common life?
5. Peter tells shepherds to lead “not as being lords” but “being examples.” What does example-based leadership look like in contrast to control-based leadership?

Analysis Questions

1. Each metaphor emphasizes something the others do not. Take any two images (for example, temple and family) and state precisely what each contributes that the other lacks. Why might the New Testament need both?
2. In 1 Corinthians 12:13 the members are made one “by one Spirit… into one body.” Trace how the Spirit functions across the images — in the body, the temple, and the fellowship. What does this suggest about the source of the church’s unity?
3. The building in Ephesians 2:21 “grows,” and the body in Ephesians 4:16 “causes growth of the body… in love.” Compare these two pictures of growth. What kind of growth is in view, and how does it happen?
4. κοινωνία (fellowship) is used both for communion with God and for a financial contribution to the poor. What is lost when “fellowship” is reduced to sociability, and how do the two uses correct one another?
5. In each image, locate where Christ stands — head, cornerstone, Chief Shepherd, the Son whose fellowship we share. What is the cumulative effect of these placements on how we understand the church’s dependence on Him?

Personal Evaluation

Honestly, which of these five pictures describes the way I actually live in this congregation — and which one is God inviting me to enter more fully: to function as a needed member, to belong as family, to be built in as a holy stone, to follow as part of the flock, or to share as a true partner?

A Note on Sources

Scripture is quoted from the New King James Version, with each reference given in full. Greek terms appear in the original script; the Strong’s number in parentheses is a lookup aid only, never the source of a definition. Lexical glosses are drawn from standard reference works — Thayer’s Greek-English Lexicon, Vine’s Expository Dictionary, and the Liddell-Scott-Jones lexicon — and are cited by word (s.v.) rather than page. Definitions that would benefit from confirmation in BDAG or TDNT are marked accordingly and should be verified against those works before the material is taught. No citation, quotation, or reference in this study has been invented; where a source could not be independently confirmed, the point rests on the biblical text itself.

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[1] Thayer’s Greek-English Lexicon, s.v. σῶμα (Strong’s #G4983), “the body… used of a (large or small) number of men closely united into one society, or family as it were; a social, ethical, mystical body”; so of the church as the body of Christ. Confirm in BDAG before teaching.

[2] Thayer’s Greek-English Lexicon, s.v. οἶκος (Strong’s #G3624), “a house… the inmates of a house, the family; the family of God, of the Christian Church.” Confirm in BDAG before teaching.

[3] Vine’s Expository Dictionary of New Testament Words, s.v. “Brother,” ἀδελφός (Strong’s #G80), used of fellow believers as members of one spiritual family.

[4] Thayer’s Greek-English Lexicon, s.v. ναός (Strong’s #G3485), “the sanctuary… used of the temple; metaphorically of a company of Christians, a Christian church, as dwelt in by the Spirit of God.” Confirm in BDAG before teaching.

[5] Vine’s Expository Dictionary of New Testament Words, s.v. “Build, Building,” οἰκοδομή (Strong’s #G3619), “the act of building,” and metaphorically the church as God’s building and the edification of believers.

[6] Liddell-Scott-Jones, s.v. ἀκρογωνιαῖος (Strong’s #G204), “at the extreme corner,” the cornerstone that sets the alignment of a building; applied to Christ in Ephesians 2:20 and 1 Peter 2:6.

[7] Thayer’s Greek-English Lexicon, s.v. ποίμνιον (Strong’s #G4168), “a flock (little flock)… metaphorically, the body of Christians, the church.” Confirm in BDAG before teaching.

[8] Vine’s Expository Dictionary of New Testament Words, s.v. “Communion, Fellowship,” κοινωνία (Strong’s #G2842), “a having in common, partnership, fellowship,” used of participation with God and with fellow believers, and of a contribution shared for others.