What was Early Christian Worship like? – What Do You Know About That

The Term “Eucharist” and Its Early Usage

Earliest Usage: The term “Eucharist” (Εὐχαριστία) appears in the earliest Christian writings. Justin Martyr (c. 100-165 AD) explicitly states: “And this food is called among us Εὐχαριστία [the Eucharist]” . The term means “thanksgiving” – from the Greek eucharistein meaning “to give thanks” .

Meaning: The Eucharist was called this because it was “an action of thanksgiving to God” . The Greek words eucharistein and eulogein “recall the Jewish blessings that proclaim—especially during a meal—God’s works: creation, redemption, and sanctification” .

Other Early Names: The Eucharist was also called:

“The Breaking of Bread” – because Jesus used this Jewish meal rite
“The Lord’s Supper” – connecting it to Jesus’s last meal with disciples
“Synaxis” – meaning “gathering together”

Early Christian Worship Service Structure (First 100 Years)

Sunday Gathering: Christians gathered “on the day called Sunday” (the Lord’s Day) . Justin Martyr describes this in detail around 155 AD .

Service Structure:

Scripture Reading: “The memoirs of the apostles or the writings of the prophets are read, as long as time permits” .
Teaching: “When the reader has ceased, the president verbally instructs, and exhorts to the imitation of these good things” .
Prayer: “Then we all rise together and pray” .
Eucharist Preparation: “When our prayer is ended, bread and wine and water are brought” .
Thanksgiving Prayer: “The president in like manner offers prayers and thanksgivings, according to his ability” .
Congregational Response: “The people assent, saying Amen” .
Distribution: “There is a distribution to each, and a participation of that over which thanks have been given” .
Service to Absent: “To those who are absent a portion is sent by the deacons” .

Daily Worship: Christians also gathered “every day, morning and evening, singing psalms and praying in the Lord’s house” . In the morning they said Psalm 62, and in the evening Psalm 140 .

The Didache’s Simple Eucharist (c. 50-120 AD)

The Didache (Teaching of the Twelve Apostles) provides the oldest elements of an Eucharistic Service . It contains simple thanksgiving prayers:

For the Cup: “We thank you, our Father, for the holy vine of David Your servant, which You made known to us through Jesus Your servant; to You be the glory for ever” [page 26].

For the Bread: “We thank you, our Father, for the life and knowledge which You made known to us through Jesus Your Servant; to You be the glory for ever” [page 27].

Unity Symbolism: “Even as this broken bread was scattered over the hills, and was gathered together and became one, so let Your Church be gathered together from the ends of the earth into Your kingdom” [page 27].

Exclusivity: “Let no one eat or drink of your Thanksgiving (Eucharist), but they who have been baptized into the name of the Lord” [page 27].

Belief in the “True Presence” of Jesus

Justin Martyr’s Teaching (c. 155 AD): Justin provides the clearest early statement: “For not as common bread and common drink do we receive these; but in like manner as Jesus Christ our Saviour, having been made flesh by the Word of God, had both flesh and blood for our salvation, so likewise have we been taught that the food which is blessed by the prayer of His word, and from which our blood and flesh by transmutation are nourished, is the flesh and blood of that Jesus who was made flesh” .

He emphasizes this is not symbolic: “We do not receive these things as common bread and common drink” .

Ignatius of Antioch (c. 35-107 AD): Ignatius, writing earlier than Justin, calls the Eucharist “the medicine of immortality, and the antidote that we should not die, but live for ever in Jesus Christ” . This is “perhaps the earliest expression of the belief that the resurrection of the body is secured by the communion of the Body of Christ in the Eucharist” .

Irenaeus (c. 130-202 AD): Irenaeus develops the theology further: “We make an oblation to God of the bread and the cup of blessing… And then, having completed the oblation, we call forth the Holy Spirit, that He may exhibit this sacrifice, both the bread the Body of Christ, and the cup the Blood of Christ” .

He argues against heretics: “How can they be consistent with themselves, [when they say] that the bread over which thanks have been given is the body of their Lord, and the cup His blood, if they do not call Himself the Son of the Creator of the world?” .

The Sacrificial Understanding

Early Christians understood the Eucharist as a sacrifice:

“The idea of the whole transaction of the Supper as a sacrifice, is plainly found in the Didache, in Ignatius, and above all, in Justin” .
The Didache instructs: “Give thanksgiving after having confessed your transgressions, that your sacrifice may be pure” [page 28].
Malachi 1:11 was interpreted as prophesying this Christian sacrifice: “In every place and time offer to me a pure sacrifice” [page 28].

The Physical Reality of Early Worship

Location: Christians met in homes – there were no church buildings initially. The “supper-room of the Christians” was modest .

Love Feast (Agape): The Eucharist was often part of a larger “agape” (love feast) where Christians shared a meal. Tertullian describes: “Our feast explains itself by its name. The Greeks call it agape, i.e., affection” .

Conduct: These gatherings were orderly:

“The participants, before reclining, taste first of prayer to God”
“As much is eaten as satisfies the cravings of hunger; as much is drunk as befits the chaste”
“They talk as those who know that the Lord is one of their auditors”
“After manual ablution, and the bringing in of lights, each is asked to stand forth and sing, as he can, a hymn to God”

Kiss of Peace: After prayers, Christians would “salute one another with a kiss” .

What This Means for Understanding Early Christianity

From the Beginning: The Eucharist was central to Christian identity from the earliest days. The Didache (possibly 50-120 AD) shows structured Eucharistic prayers.
Real Presence: The earliest fathers did not see the Eucharist as merely symbolic. Justin Martyr (c. 155 AD) explicitly teaches the bread and wine become Christ’s flesh and blood through prayer.
Continuity with Judaism: The Eucharist retained Jewish meal blessings (berakoth) but transformed them through Christ.
Communal Focus: The Eucharist was about unity – “gathered together from the ends of the earth into Your kingdom” [page 27].
Sacrificial Understanding: Even in the Didache, the Eucharist is called a “sacrifice” that must be pure [page 28].

The evidence shows that within the first 100 years, Christians had developed a structured worship service centered on the Eucharist, understood as the true presence of Christ’s body and blood, celebrated as a sacrifice of thanksgiving, within a communal meal that expressed Christian love and unity.

The Didache’s Simple Thanksgiving (Late 1st-Early 2nd Century)

The Didache (Teaching of the Twelve Apostles), one of the earliest Christian liturgical documents, contains remarkably simple Eucharistic prayers without any explicit recitation of Jesus’s words of institution . The prayers consist of:

For the cup: “We give you thanks, our Father, for the holy vine of your son David, which you made known to us through your Son Jesus”
For the bread: “We give you thanks, our Father, for the life and knowledge which you made known to us through your Son Jesus”

These prayers are purely thanksgiving-focused, with no mention of “This is my body” or “This is my blood.” The Didache represents what scholars call “the oldest elements of an Eucharistic Service” with “neither the Commemoration nor the Invocation, but only two short and simple forms of Thanksgiving” .

Justin Martyr and the Transition (Mid-2nd Century)

Justin Martyr (c. 100-165 AD) marks a significant development. He “seems to imply that the consecration is effected by the Commemoration of Christ’s own words in the Institution” . Justin writes that “the food which is blessed by the prayer of the word which comes from Him… is the Flesh and Blood of that Jesus who was made Flesh” .

This represents a shift toward understanding the words of institution as having consecratory power. However, Justin still doesn’t provide a full liturgical formula with explicit recitation – he describes the practice rather than prescribing it.

Irenaeus and the Invocation of the Holy Spirit (Late 2nd Century)

Irenaeus (c. 130-202 AD) introduces another key element: “Irenaeus is apparently the earliest writer who represents the Invocation of the Holy Ghost as the immediate act of consecration” . He writes:

“We make an oblation to God of the bread and the cup of blessing… And then, having completed the oblation, we call forth the Holy Spirit, that He may exhibit this sacrifice, both the bread the Body of Christ, and the cup the Blood of Christ” .

Irenaeus also states that “the bread which is of the earth, having received the invocation of God, is no longer common bread, but the Eucharist” . This introduces the concept of epiclesis (invocation) alongside the words of institution.

Cyril of Jerusalem and Standardization (4th Century)

By the time of Cyril of Jerusalem (c. 313-386 AD), the recitation of Jesus’s words had become standard practice. Cyril’s catechetical lectures show that “the consecration is effected by the words of Christ” . He teaches that “the bread and wine remaining so, as to their substance, yet are not said to be only bread and wine common and ordinary, but also the Body and Blood of Christ” .

Interestingly, Cyril’s account of Eucharistic rites in his lectures contains “not the slightest reference to the words of Institution” , but scholars note this is likely because “Cyril did not think it necessary, after his repeated references to the Institution in the preceding Lecture, to make further mention of a custom so well known” .

Theological Development and Reasons for the Change

The documents reveal several factors driving this development:

Sacrificial understanding: The Eucharist came to be seen as a sacrifice, with Malachi 1:11 cited as demanding “a solemn Christian sacrifice” . The words “τοῦτο ποιεῖτε” (do this) were interpreted as containing “a command with regard to a definite religious action” that “could only be represented as a sacrifice” .
Doctinal precision: As controversies arose about the nature of Christ’s presence, explicit recitation of the institution narrative provided theological clarity and emphasized the reality of the transformation.
Liturgical standardization: By the 4th century, liturgies show remarkable agreement in including the words of institution as an essential element. The Clementine Liturgy and Liturgy of S. James both place the words of institution “before the Invocation” .
Apostolic tradition: Gregory the Great testified that the Apostles delivered no other “custom” to the churches than “the words of Institution and the Lord’s Prayer” .

Medieval Consolidation

By the time of Thomas Aquinas (13th century), the theology had fully developed: “the form of this sacrament is pronounced as if Christ were speaking in person” . Aquinas debates whether “This is My body” alone constitutes the essential form or whether additional words are needed , showing how central the explicit recitation had become.

The transition occurred gradually between the 2nd and 4th centuries, driven by:

The need for clearer sacrificial theology
Doctrinal controversies requiring precise formulations
Liturgical standardization across expanding Christian communities
Development of episcopal authority and standardized worship

The Didache represents the earliest, simplest form – pure thanksgiving. Justin Martyr begins connecting consecration to Christ’s words. Irenaeus adds epiclesis. By the 4th century, Cyril assumes the recitation is standard practice, and by the Middle Ages, it’s theologically essential.

The Didache’s Foundation: Pure Thanksgiving

The Didache (Teaching of the Twelve Apostles, late 1st-early 2nd century) contains the earliest known Eucharistic prayers that are purely thanksgiving-focused without explicit consecration language . The prayers are simple:

For the cup: “We thank thee, our Father, for the holy vine of David Thy servant, which Thou madest known to us through Jesus Thy Servant”
For the bread: “We thank Thee, our Father, for the life and knowledge which Thou madest known to us through Jesus Thy Servant”

These prayers contain no recitation of Jesus’s words of institution (“This is my body… This is my blood”) and focus entirely on thanksgiving (εὐχαριστία means “thanksgiving”).

Clement of Rome: Connecting Thanksgiving to Sacrifice

While I couldn’t find direct Eucharistic teachings from Clement’s First Epistle to the Corinthians in my searches, the Clementine Liturgy (attributed to Clement) shows significant development. This liturgy contains prayers that bridge thanksgiving with consecration:

“We offer to Thee, our King and our God, according to His constitution, this bread and this cup, giving Thee thanks, through Him, that Thou hast thought us worthy to stand before Thee, and to sacrifice to Thee” .

The Clementine liturgy introduces epiclesis (invocation of the Holy Spirit): “we beseech Thee that Thou wilt mercifully look down upon these gifts… and send down upon this sacrifice Thine Holy Spirit… that He may show this bread to be the body of Thy Christ, and the cup to be the blood of Thy Christ” .

This represents a crucial development: thanksgiving is maintained but now connected to a sacrificial offering that becomes Christ’s body and blood through the Holy Spirit’s action.

Ignatius of Antioch: Explicit Identification of Eucharist with Christ’s Flesh

Ignatius of Antioch (c. 35-107 AD) makes the most significant theological leap. He explicitly identifies the Eucharist with Christ’s actual flesh:

“They abstain from eucharist (thanksgiving) and prayer, because they allow not that the Eucharist is the flesh of our Saviour Jesus Christ, which flesh suffered for our sins, and which the Father of his goodness raised up” .

This statement is revolutionary because:

Direct identification: The Eucharist is the flesh of Christ (not just represents it)
Historical connection: It’s the same flesh that suffered on the cross
Resurrection reality: It’s the same flesh the Father raised up

Ignatius thus bridges the gap by:

Maintaining the thanksgiving aspect (still calling it “eucharist”)
Adding ontological reality: The thanksgiving meal actually is Christ’s flesh
Connecting to salvation history: It’s the very flesh that accomplished redemption

The Theological Bridge They Create

Both Fathers develop the Didache’s foundation in complementary ways:

From thanksgiving to sacrifice: Clement shows how thanksgiving prayers become sacrificial offerings
From memorial to reality: Ignatius insists the Eucharist isn’t just a reminder but the actual flesh of Christ
From simple prayer to epiclesis: The Clementine liturgy introduces the Holy Spirit’s role in effecting the change
From community meal to salvific participation: Both connect receiving the Eucharist to participation in Christ’s saving work

Ignatius’s contribution is particularly crucial because he directly addresses docetism (the heresy that Christ only seemed to have a physical body). By insisting the Eucharist is Christ’s flesh, he establishes:

The reality of Christ’s incarnation
The continuity between Christ’s historical body and Eucharistic presence
The necessity of physical participation for salvation

The bridge they create is this: What begins as simple thanksgiving (Didache) becomes through prayer and the Spirit’s action (Clement) the actual flesh of the crucified and risen Christ (Ignatius). Thanksgiving isn’t abandoned but becomes the context within which the miraculous transformation occurs.

This development explains why later liturgies (like Justin Martyr’s accounts) include both thanksgiving prayers and the words of institution – the thanksgiving provides the theological framework, while the institution narrative specifies what is being made present.

Justin Martyr’s Pivotal Description (c. 150 AD)

Justin Martyr provides the earliest detailed account of Eucharistic practice that bridges the simple thanksgiving of the Didache with the developed theology of Irenaeus. His description in the First Apology shows several key transitional elements:

1. Maintenance of Thanksgiving Framework

Justin preserves the Didache’s emphasis on thanksgiving but expands it:

“The president… offers prayers and thanksgivings, according to his ability”
The food is “blessed by the prayer of His word” (τῇ εὐχῇ λόγου τοῦ παρ’ αὐτοῦ)

2. Introduction of Institution Narrative

Crucially, Justin quotes Jesus’s words of institution for the first time in liturgical description:

“Jesus took bread, and when He had given thanks, said, ‘This do ye in remembrance of Me, this is My body'”
“Having taken the cup and given thanks, He said, ‘This is My blood'”

This represents a major development from the Didache’s simple thanksgiving prayers without explicit institution narrative.

3. Connection to Incarnational Theology

Justin makes a theological leap by connecting the Eucharist to the Incarnation:

“In like manner as Jesus Christ our Saviour, having been made flesh by the Word of God, had both flesh and blood for our salvation, so likewise have we been taught that the food which is blessed by the prayer of His word… is the flesh and blood of that Jesus who was made flesh”

This parallels Ignatius’s insistence that the Eucharist is Christ’s flesh but adds the mechanism: it happens through “the prayer of His word.”

4. Distinction from Common Food

Justin emphasizes the transformation:

“Not as common bread and common drink do we receive these”
The food becomes “the flesh and blood of that Jesus who was made flesh”

The Specific Transitional Elements

Justin’s account shows five key developments from the Didache to Irenaeus:

From thanksgiving alone to thanksgiving + institution narrative: The Didache has only thanksgiving; Justin adds explicit recitation of Jesus’s words.
From vague remembrance to specific consecration language: The Didache says “we give thanks”; Justin specifies what is being made present through those words.
From community meal to sacramental reality: Justin insists this isn’t “common bread and drink” but actually becomes Christ’s flesh and blood.
From simple prayer to theological framework: Justin connects the Eucharistic transformation to the Incarnation pattern (Word becoming flesh → prayer making bread become flesh).
From oral tradition to written testimony: Justin cites “the memoirs composed by them, which are called Gospels” as authority for the institution narrative .

Irenaeus’s Development Beyond Justin

Irenaeus (c. 130-202 AD) builds on Justin’s foundation but adds crucial elements:

1. Explicit Epiclesis (Invocation of the Holy Spirit)

“Having completed the oblation, we call forth (ἐπικαλοῦμεν) the Holy Spirit, that He may exhibit this sacrifice, both the bread the Body of Christ, and the cup the Blood of Christ”

This is new: Justin mentions “prayer of His word” but Irenaeus specifies Holy Spirit invocation.

2. Sacrificial Language

Irenaeus calls it a “sacrifice” and “oblation” , developing the sacrificial dimension hinted at by Justin.

3. Anti-heretical Emphasis

Against docetists and Gnostics, Irenaeus insists on the reality of both Christ’s flesh and the Eucharistic transformation.

4. Connection to Creation and Resurrection

Irenaeus emphasizes that earthly elements (bread, wine) become vehicles of eternal life, tying Eucharist to creation and resurrection theology.

The Complete Transition Path

Didache (late 1st c.): Simple thanksgiving prayers → No institution narrative → No explicit consecration

Ignatius (c. 107): “Eucharist is the flesh of Christ” → Reality emphasized → But no liturgical mechanics described

Justin (c. 150): Thanksgiving + Institution narrative quoted → “Not common bread” → Transformation through “prayer of His word” → Connection to Incarnation pattern

Irenaeus (c. 180): Thanksgiving + Institution + Epiclesis → Explicit Holy Spirit invocation → Sacrificial language → Anti-heretical defense

The critical transition point is Justin Martyr, who:

Documents the actual practice of reciting Jesus’s words
Provides theological rationale (parallel to Incarnation)
Distinguishes sacramental from common food
Cites Gospel authority for the practice

Justin thus provides the missing link showing when and how the words of institution became central: by the mid-2nd century, they were being recited as part of the thanksgiving prayer, with the understanding that through this “prayer of His word,” the bread and wine become Christ’s flesh and blood.