Direct Answer
The early church believed communion, usually called the Eucharist or Thanksgiving, was a holy participation in the body and blood of Jesus Christ—not common bread and drink, and not a casual symbolic meal. The strongest early witnesses in the supplied sources—Ignatius, Justin Martyr, the Didache, Irenaeus, Cyprian, and others—speak of the bread and cup with striking seriousness: the Eucharist is connected with Christ’s real flesh and blood, the unity of the church, thanksgiving, remembrance of Christ’s suffering, worthy reception, baptismal membership, repentance, and resurrection life.
That conclusion rests first on Scripture. Paul asks, “The cup of blessing which we bless, is it not the communion of the blood of Christ? The bread which we break, is it not the communion of the body of Christ?” (1 Corinthians 10:16). He also warns that whoever eats and drinks “unworthily” is “guilty of the body and blood of the Lord” (1 Corinthians 11:27). The early Christian writings supplied here read those apostolic words very literally and reverently.
At the same time, these sources do not give a later scholastic explanation of how Christ is present. They do not use the later terminology of transubstantiation in the quoted material. One supplied lesson explicitly says the early Christians did not normally understand Jesus’ words in a carnal sense or as cannibalism, and did not normally explain communion as transubstantiation. But neither did the main early writers in these sources reduce communion to mere bread and a mental reminder. Justin says Christians “do not receive these as common bread and drink.” Ignatius says heretics abstain because they “do not acknowledge the Eucharist to be the flesh of our Savior Jesus Christ.” Irenaeus says the bread and cup, receiving God’s invocation or Word, become the Eucharist, “the body and blood of Christ.”
So, in the language of these sources: the early church believed communion was the Eucharistic bread and cup blessed in thanksgiving, received only by baptized and faithful Christians, guarded from unworthy participation, expressing the unity of the church, remembering Christ’s suffering, and truly sharing in the body and blood of the incarnate, crucified, and risen Lord.
What Scripture Says
The supplied Scripture passages are all from Paul’s first letter to the Corinthians, and they are enough to explain why the early Christians spoke so strongly about communion.
1. Paul calls the bread and cup a “communion” of Christ’s body and blood
Paul writes:
“The cup of blessing which we bless, is it not the communion of the blood of Christ? The bread which we break, is it not the communion of the body of Christ?” — 1 Corinthians 10:16
This is not merely language of private recollection. Paul describes the blessed cup and broken bread as a communion—a sharing, participation, or fellowship—in Christ’s blood and body. That is the apostolic wording the early writers repeatedly echo.
Irenaeus, for example, directly uses Paul’s language when he argues against those who deny the salvation of the flesh:
“If the flesh does not attain salvation, then the Lord did not redeem us with His blood, nor is the cup of the Eucharist a communion of His blood, nor the bread we break a communion of His body.”
He then adds that Christ “has recognized the cup … as His blood” and “the bread … He has established as His body.” That is an early Christian argument built directly from Paul’s communion language and from the incarnation: because Christ truly had flesh and blood, and because he truly redeems human flesh, the Eucharist cannot be treated as a merely unreal or imaginary thing.
2. Paul says the church may fail to eat the Lord’s Supper rightly
Paul also says:
“When ye come together therefore into one place, this is not to eat the Lord’s supper.” — 1 Corinthians 11:20
The verse shows that the church’s gathering could be outwardly religious and still fail to be the Lord’s Supper in the proper sense. The supplied transcript from David Anderson’s “Sacred Roots: Practical Distinctives of the Early Church” comments on the Corinthian setting by describing people eating a full meal, some filling themselves while others were neglected, and then connecting this with the familiar words of institution: “Take, eat, this is my body.” The point in that transcript is that communion was not isolated from the gathered life of the church; it belonged to the assembly and was bound up with how brothers and sisters treated one another.
This fits the early Christian concern for unity and worthy participation. Ignatius tells the Philadelphians, “Take care, then, to have only one Eucharist,” because there is “one flesh of our Lord Jesus Christ” and “one cup to show the unity of His blood.” The Eucharist expressed church unity; division contradicted what the bread and cup meant.
3. Paul warns against unworthy reception
Paul’s warning is severe:
“Wherefore whosoever shall eat this bread, and drink this cup of the Lord, unworthily, shall be guilty of the body and blood of the Lord.” — 1 Corinthians 11:27
Clement of Alexandria quotes this warning and applies it to self-examination:
“In the same way, in the distribution of the Eucharist, some according to custom direct that each person among the people should take his own part individually. A person’s own conscience is the best guide for choosing rightly or for avoiding something. And its firm foundation is a right life, together with proper instruction. But copying those who have already been tested and have lived rightly is the best way to understand and practice the commandments. So, ‘whoever eats the bread and drinks the cup of the Lord in an unworthy manner will be guilty of the body and blood of the Lord. But let a man examine himself, and so let him eat of the bread and drink of the cup.’”
Clement’s use of Paul shows that the early Christian concern was not only about what the elements are, but also about the moral and spiritual condition of the communicant. Communion required reverence, instruction, conscience, and a “right life.”
What the Early Christian Writers Say
The Didache: Eucharist as thanksgiving, unity, and a meal for the baptized
The Didache, also called The Teaching of the Twelve Apostles, gives one of the earliest simple descriptions of Eucharistic prayer. It says:
“Now about the Thanksgiving, or Eucharist, give thanks in this way. First, about 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 forever.’ And about the broken bread: ‘We thank You, our Father, for the life and knowledge that You made known to us through Jesus Your Servant. To You be the glory forever.’”
Then it connects the broken bread with the gathering of the church:
“Just as this broken bread was scattered over the hills, and then was gathered together and became one, so let Your Church be gathered together from the ends of the earth into Your kingdom. For Yours is the glory and the power through Jesus Christ forever.”
The Didache also restricts participation:
“But let no one eat or drink of your Thanksgiving, or Eucharist, except those who have been baptized into the name of the Lord. For about this also the Lord has said, ‘Do not give what is holy to dogs.’ Matthew 7:6”
Several things are explicit here. First, the Eucharist is thanksgiving to the Father through Jesus. Second, the bread symbolizes and enacts the unity of the church gathered from many places into one. Third, it is “holy” and therefore not open indiscriminately to everyone; it is for those baptized “into the name of the Lord.”
The Didache passage does not, by itself, explain the presence of Christ in the bread and cup the way Ignatius, Justin, and Irenaeus do. But it shows the early church’s practice: prayer, thanksgiving, bread and cup, church unity, and guarded participation.
Ignatius: the Eucharist is the flesh of Jesus Christ and a mark of church unity
Ignatius speaks with unusual clarity. In his Epistle to the Smyrnaeans, he warns against those who separate themselves from the church and from the Eucharist:
“They abstain from the Eucharist and from prayer, because they do not acknowledge the Eucharist to be the flesh of our Savior Jesus Christ, who suffered for our sins, and whom the Father, in His goodness, raised up again.”
Ignatius ties the Eucharist directly to the real suffering and resurrection of Jesus. The flesh present in the Eucharist is not detached from the gospel story; it is “the flesh of our Savior Jesus Christ, who suffered for our sins” and was raised by the Father. In the same paragraph, he urges the church to “pay attention to the prophets, and above all, to the Gospel, in which the passion of Christ has been revealed to us, and the resurrection has been fully proven.”
That is important because Ignatius is not making a free-standing ritual claim. He is defending the incarnation, passion, and resurrection against people who reject the Eucharist because they reject the reality of Christ’s flesh.
Ignatius also connects the Eucharist with the order and unity of the church:
“Let no one do anything related to the Church without the bishop. Consider that to be a proper Eucharist which is administered by the bishop or by someone he has entrusted it to. Wherever the bishop is, there let the congregation also be; just as, wherever Jesus Christ is, there is the Catholic Church.”
And in his Epistle to the Philadelphians:
“Take care, then, to have only one Eucharist. For there is one flesh of our Lord Jesus Christ, and one cup to show the unity of His blood; one altar; as there is one bishop, along with the presbytery and deacons, my fellow-servants: so that, whatever you do, you may do it according to the will of God.”
From Ignatius, the early belief is explicit on two points: the Eucharist is not ordinary food, but “the flesh of our Savior Jesus Christ,” and the one Eucharist expresses the unity of the church in Christ’s one flesh and one blood.
Justin Martyr: not common bread and drink, but the flesh and blood of Jesus made flesh
Justin Martyr’s First Apology, chapter 66, gives one of the fullest early explanations. He begins by saying who may receive:
“This food is called among us [the Eucharist], and only those who believe that our teachings are true, have been washed with the washing for the remission of sins and renewal, and live as Christ instructed, are allowed to partake.”
This agrees with the Didache’s restriction to the baptized, but Justin adds belief and obedience: those who partake must believe Christian teaching, be washed for remission and renewal, and live as Christ instructed.
Then he describes what Christians believe about the elements:
“We do not receive these as common bread and drink, but in the same way that Jesus Christ our Savior became flesh by the Word of God and had flesh and blood for our salvation, we have been taught that the food blessed by His word and prayer, which nourishes our blood and flesh through transformation, is the flesh and blood of Jesus who became flesh.”
This is one of the strongest statements in the supplied evidence. Justin’s comparison is incarnational: just as Jesus Christ truly “became flesh by the Word of God” and had “flesh and blood for our salvation,” so Christians have been taught that the blessed food is “the flesh and blood of Jesus who became flesh.”
Justin grounds this in the apostolic writings:
“The apostles, in the writings they composed, which are called Gospels, have passed down to us what Jesus instructed them: that He took bread, gave thanks, and said, ‘Do this in remembrance of Me, this is My body;’ and in the same way, after taking the cup and giving thanks, He said, ‘This is My blood;’ and gave it to them alone.”
So Justin’s belief is not presented as speculation. He says it came from what the apostles handed down in the Gospels: Jesus took bread and cup, gave thanks, and said, “This is My body” and “This is My blood.”
Justin also calls the Eucharist a Christian sacrifice of thanksgiving in his Dialogue with Trypho. He says:
“God, anticipating all the sacrifices we offer through this name, which Jesus the Christ commanded us to offer, specifically in the Eucharist of the bread and the cup, and which Christians present everywhere around the world, confirms that they are pleasing to Him.”
He clarifies the kind of sacrifice he means:
“I also agree that prayers and giving of thanks, when offered by worthy individuals, are the only perfect and pleasing sacrifices to God. For such alone Christians have committed to offer, in remembrance brought about by their solid and liquid food, which recalls the suffering endured by the Son of God.”
Justin therefore joins together several themes: Eucharist, thanksgiving, remembrance of Christ’s suffering, worthy prayer, and the bread and cup as the flesh and blood of the incarnate Jesus.
Irenaeus: the Eucharist supports the resurrection of the flesh
Irenaeus uses the Eucharist in his argument against those who deny the salvation and resurrection of the flesh. In Against Heresies, Book V, he writes:
“If the flesh does not attain salvation, then the Lord did not redeem us with His blood, nor is the cup of the Eucharist a communion of His blood, nor the bread we break a communion of His body.”
He continues:
“He has recognized the cup (a part of creation) as His blood, from which He nourishes our blood; and the bread (also part of creation) He has established as His body, from which He nourishes our bodies.”
This argument matters because Irenaeus sees a deep connection between creation, incarnation, Eucharist, and resurrection. The bread and cup are created things. Christ, the Word of God, truly became flesh. Human flesh is truly redeemed. Therefore, the Eucharist, made from created bread and wine, can be the body and blood of Christ and can nourish bodies that will rise.
In another passage from the same chapter, he says:
“When, therefore, the mixed cup and the made bread receive the Word of God, and the Eucharist of the blood and body of Christ is formed, from which the substance of our flesh is grown and sustained, how can they claim that the flesh is incapable of receiving the gift of God, which is eternal life, when this flesh is nourished from the body and blood of the Lord and is a part of Him?”
And again:
“Having received the Word of God, [the bread] becomes the Eucharist, which is the body and blood of Christ; so also our bodies, being nourished by it, and laid in the earth, and decomposing there, shall rise at their appointed time.”
In Against Heresies, Book IV, Irenaeus gives another important formulation:
“For just as the bread, which is produced from the earth, when it receives the invocation of God, is no longer common bread but the Eucharist, consisting of two realities, earthly and heavenly; so also our bodies, when they receive the Eucharist, are no longer corruptible, having the hope of the resurrection to eternity.”
This does not sound like a bare memorial. Irenaeus says the bread is “no longer common bread,” but “the Eucharist,” and that it consists of “two realities, earthly and heavenly.” He also says the Eucharist confirms the hope that our bodies will be raised.
Clement of Alexandria: worthy reception and self-examination
Clement’s supplied passage does not define the Eucharist’s presence as fully as Ignatius, Justin, or Irenaeus. But he does show how seriously the church approached participation. He says that in the Eucharistic distribution, “a person’s own conscience is the best guide for choosing rightly or for avoiding something,” and that the foundation is “a right life, together with proper instruction.” Then he quotes Paul’s warning from 1 Corinthians 11:27–28 about eating and drinking unworthily and self-examination.
So Clement contributes an ethical and pastoral point: communion is holy, and the communicant must examine himself and approach with a rightly ordered life.
Cyprian: communion strengthens the faithful, but must not be given carelessly to the unrepentant
Cyprian speaks of communion as strengthening believers with Christ’s body and blood. In Epistle 53, he argues that Christians facing persecution should receive communion:
“Communion must be given by us, not to the dying, but to the living, so that we may not leave unarmed and defenseless those whom we stir up and urge on to battle, but may strengthen them with the protection of Christ’s body and blood.”
He then says:
“Since the Eucharist is appointed for this very purpose, that it may be a safeguard to those who receive it, it is necessary for us to arm with the protection of the Lord’s abundance those whom we want to be safe against the adversary.”
And he asks:
“For how do we teach or urge them to shed their blood in confessing His name if we deny the blood of Christ to those who are about to enter the warfare? Or how do we make them fit for the cup of martyrdom if we do not first allow them, in the Church, to drink the cup of the Lord by the right of communion?”
Cyprian therefore sees communion as a real spiritual strengthening, “the protection of Christ’s body and blood,” especially for those facing confession and martyrdom.
But Cyprian is also severe about unworthy or premature communion for the lapsed. In Treatise 3, he warns against receiving people before repentance:
“Before their sin is atoned for, before confession has been made of their crime, before their conscience has been cleansed by sacrifice and by the hand of the priest, before the offense against an angry and threatening Lord has been appeased, violence is done to His body and blood.”
He adds:
“And now they sin against their Lord more with hand and mouth than when they denied their Lord.”
Whatever later questions one may have about Cyprian’s penitential discipline, the supplied passage clearly shows how he understood the Eucharist: to receive it unworthily is not a light matter, because it concerns Christ’s body and blood.
Cyprian’s Epistle 62 also shows that by his time Christians could celebrate the cup in the morning, not only in an evening meal setting. He explains that although the Lord offered the cup after supper, “we celebrate the Lord’s resurrection in the morning.” This is useful because it shows the early Christians did not think they had to recreate every circumstance of the Last Supper—time of day, full meal, and so forth—in order to celebrate the Eucharist.
What Is Explicitly Stated
From the supplied sources, the following points are explicitly stated.
1. The Eucharist was not common bread and drink
Justin Martyr says plainly:
“We do not receive these as common bread and drink.”
Irenaeus says the bread, after receiving the invocation of God, is:
“No longer common bread but the Eucharist, consisting of two realities, earthly and heavenly.”
So the early church did not approach the consecrated bread and cup as ordinary food.
2. The Eucharist was called Christ’s body and blood, flesh and blood
Ignatius says heretics abstain because they:
“Do not acknowledge the Eucharist to be the flesh of our Savior Jesus Christ.”
Justin says Christians were taught that the blessed food:
“Is the flesh and blood of Jesus who became flesh.”
Irenaeus says:
“The Eucharist of the blood and body of Christ is formed.”
And Cyprian speaks of:
“The protection of Christ’s body and blood.”
These are not isolated phrases. They appear across several writers and in different kinds of arguments: against heresy, in apologetic explanation, in doctrinal defense of resurrection, and in pastoral discipline.
3. Communion was tied to the incarnation and resurrection
Ignatius links the Eucharist to “the flesh of our Savior Jesus Christ, who suffered for our sins” and whom the Father raised. Justin compares the Eucharist to the reality that “Jesus Christ our Savior became flesh by the Word of God and had flesh and blood for our salvation.” Irenaeus uses the Eucharist to defend the future resurrection of human bodies.
So the Eucharist was not an isolated ritual. It was a confession that the Son of God truly became flesh, truly suffered, truly shed blood, truly rose, and truly gives life to embodied human beings.
4. Communion was for baptized, believing, obedient Christians
The Didache says:
“Let no one eat or drink of your Thanksgiving, or Eucharist, except those who have been baptized into the name of the Lord.”
Justin says only those may partake who:
“Believe that our teachings are true, have been washed with the washing for the remission of sins and renewal, and live as Christ instructed.”
This is more than a private devotional act. Communion belonged to the baptized community of disciples.
5. Communion required worthy reception and self-examination
Paul warns that unworthy reception makes one “guilty of the body and blood of the Lord.” Clement applies that warning to conscience, right life, instruction, and self-examination. Cyprian warns that giving communion without repentance can do “violence” to Christ’s body and blood.
6. The Eucharist expressed unity
The Didache prays that as the scattered bread is gathered into one loaf, so the church may be gathered into God’s kingdom. Ignatius says, “Take care, then, to have only one Eucharist,” because there is “one flesh” and “one cup.”
What Is Strongly Implied
The supplied evidence strongly implies several additional conclusions, though we should distinguish these from what is explicitly stated.
1. The mainstream early Christian view was a real participation, not a merely mental symbol
Paul’s “communion of the blood” and “communion of the body,” Justin’s “not common bread and drink,” Ignatius’s “the flesh of our Savior Jesus Christ,” and Irenaeus’s “no longer common bread” all point in the same direction. These sources strongly imply that the early church saw communion as a real participation in Christ’s body and blood.
A supplied lesson segment on “Communion” says the teacher does not know of anyone in the church of that period who expressed the view that communion was only symbolic; the group outside the church that denied any real sense were the Gnostics. That lesson statement should be read as a teaching summary, while the primary evidence above shows why that summary is plausible: the main early witnesses supplied here speak too strongly to fit a bare-symbol-only view.
2. The early Christians understood communion in an anti-gnostic, pro-incarnation way
Ignatius says the people who avoid the Eucharist do so because they do not acknowledge it as Christ’s flesh. Irenaeus argues that denying the salvation of the flesh undermines the Eucharist and Christ’s redeeming blood. This strongly implies that early Eucharistic belief was bound up with the church’s rejection of views that treated matter, flesh, or Christ’s body as unreal or unimportant.
3. The Eucharist was considered spiritually life-giving and protective
Irenaeus connects the Eucharist with nourishment and resurrection. Cyprian says it is appointed as a “safeguard” and gives “the protection of Christ’s body and blood.” A supplied atonement lesson summarizes this by saying the early Christians believed there was, as Ignatius put it, “in communion, the medicine of immortality,” while also warning that Jesus was not speaking in a carnal or cannibalistic sense. That exact phrase is from the lesson segment rather than from the supplied Ignatius paragraph, but it is consistent with Irenaeus’s and Cyprian’s emphasis on life, nourishment, resurrection, and protection.
4. The church did not believe every detail of the Last Supper setting had to be reproduced
Cyprian says the Lord offered the cup after supper, yet Christians celebrated the resurrection in the morning. A supplied David Bercot transcript similarly says the early Christians did not feel they had to recreate the Last Supper by holding communion at night, after a meal, or necessarily with every original circumstance repeated. This does not settle every later question about communion practice, but it does show flexibility in circumstances while retaining the bread, cup, thanksgiving, and meaning.
What These Sources Do Not Address
Several limits should be kept clear.
1. They do not give a later technical doctrine of transubstantiation
The early writers say very strong things: “not common bread,” “flesh and blood,” “body and blood,” “two realities, earthly and heavenly.” But the supplied quotations do not define the Eucharist with later scholastic categories. A supplied lesson on atonement states that the early Christians “did not normally understand his words to be talking about transubstantiation, that the bread and wine physically become the body and blood of Jesus Christ,” and also says Jesus was not speaking “in a carnal sense” or about cannibalism.
So it would be an overstatement, from these sources, to say the early church taught later transubstantiation exactly as later theology defined it. It would also be an overstatement to say they believed communion was only a symbol. The evidence points to a real, holy communion in Christ’s body and blood without the later technical explanation being supplied here.
2. They do not show worship of the consecrated bread and wine
One supplied lesson on John 6 says:
“The one thing the Catholic Church has added that you do not find in Scripture or in the early church, and that is the practice of literally worshiping the consecrated bread and wine.”
That is a modern lesson statement, not an early Christian quotation in the supplied evidence. Still, within the evidence provided here, the early writers reverence the Eucharist, restrict it, and warn against unworthy reception, but the supplied early passages do not describe Eucharistic adoration of the elements.
3. They do not answer every later debate about frequency, leaven, exact liturgy, or metaphysics
The Didache gives prayers. Justin gives an apologetic explanation. Ignatius emphasizes unity and the bishop. Irenaeus argues from Eucharist to resurrection. Cyprian discusses discipline and pastoral strengthening. But these sources do not give a full later liturgical manual or settle every later denominational debate about frequency, leavened versus unleavened bread, exact wording, or philosophical mechanism.
4. They do not make early Christian writers equal to Scripture
The early writers are valuable historical witnesses to how early Christians understood apostolic teaching. But the highest authority in the supplied evidence remains Scripture: Paul’s description of the cup and bread as communion in Christ’s blood and body, and his warning against unworthy reception. The early writers are important because they show how Christians close to the apostolic period received and applied those apostolic words.
Summary
The early church believed communion was a holy Eucharist—a thanksgiving with bread and cup—received by baptized, believing, obedient Christians in the gathered church. It was not treated as common bread and drink. Paul calls the cup and bread a “communion” of Christ’s blood and body, and warns that unworthy reception makes one guilty of the Lord’s body and blood.
The early Christian witnesses in these sources speak in the same serious way. The Didache restricts the Eucharist to the baptized and prays that the church be gathered into one. Ignatius says the Eucharist is “the flesh of our Savior Jesus Christ” and urges one Eucharist in the unity of the church. Justin Martyr says Christians do not receive it as common bread and drink, but as the flesh and blood of Jesus who became flesh, grounding this in the apostolic Gospel words, “This is My body” and “This is My blood.” Irenaeus says the bread and cup, receiving God’s Word or invocation, become the Eucharist, the body and blood of Christ, and uses this to defend the resurrection of the flesh. Clement and Cyprian show the same reverence by stressing self-examination, repentance, and the strengthening protection of Christ’s body and blood.
Therefore, the best answer from these sources is: the early church believed communion was a real and sacred participation in the body and blood of the incarnate, crucified, and risen Jesus Christ; a thanksgiving and remembrance of his suffering; a sign and enactment of church unity; a gift for the baptized faithful; and a rite to be received worthily. These sources do not require us to read later technical explanations back into the earliest writers, but they also do not support the idea that early Christians viewed communion as merely ordinary bread and wine with no real communion in Christ.
