Part I
Introduction, Historical Context, Authorship of 1 John, the Meaning of "Antichrist," and a Verse-by-Verse Exegesis of 1 John 2:18–19
Introduction
Among the most powerful passages regarding the unity of the Church is 1 John 2:18–19:
"Children, it is the last hour; and as you have heard that antichrist is coming, so now many antichrists have come... They went out from us, but they were not of us; for if they had been of us, they would have continued with us. But they went out, that it might become plain that they all are not of us." (ESV)
This brief passage has enormous theological significance.
It addresses:
- the nature of the Antichrist,
- false teachers,
- schism,
- perseverance in apostolic faith,
- and the visible unity of Christ's Church.
For Catholics, these verses strongly support an important biblical principle:
Those who abandon apostolic communion separate themselves from the Church founded by Christ rather than creating a new authentic Church.
Throughout history, countless groups have claimed to restore "true Christianity." Yet St. John gives a remarkably simple test:
Did they remain in the apostolic communion—or did they depart from it?
This article examines that question through Scripture, Church history, Sacred Tradition, and the witness of the earliest Christians.
Historical Background of First John
Author
From the earliest centuries, Christians identified the author as St. John the Apostle, the beloved disciple of Jesus.
He is traditionally recognized as the author of:
- the Gospel of John
- 1 John
- 2 John
- 3 John
- Revelation (though scholarly discussion exists regarding Revelation's literary style).
The testimony of the early Church is remarkably consistent.
Early Witnesses
St. Irenaeus (c. AD 180)
A disciple of St. Polycarp—who himself was a disciple of St. John—explicitly attributes First John to the Apostle.
This testimony carries exceptional historical weight because it represents only one generation removed from the Apostle himself.
Date
Most scholars place the writing between
AD 85–95
while St. John was living in Ephesus, serving as the last surviving Apostle.
This places the letter near the close of the apostolic age.
Audience
Unlike Paul's letters, First John is not addressed to one congregation.
It was likely intended as a circular letter for multiple churches in Asia Minor.
John writes as a spiritual father to communities already founded upon apostolic teaching.
Notice how frequently he addresses them:
- "Little children"
- "Beloved"
- "Brothers"
His concern is pastoral—not merely theological.
Historical Crisis Behind the Letter
John writes because dangerous teachers had appeared within Christian communities.
These teachers eventually departed from the Church while attempting to lead believers after themselves.
Many scholars identify these false teachers with an early form of Docetism or Proto-Gnosticism.
They denied essential truths about Christ.
Examples include:
- denying Jesus truly came in the flesh
- denying the Incarnation
- rejecting apostolic authority
- claiming secret knowledge
- separating themselves from apostolic communion
Notice carefully:
John never describes them as pagans becoming Christians.
Instead,
they originated inside the Christian community before separating from it.
This historical background is essential for understanding 1 John 2:19.
What Does "Antichrist" Mean?
The word Antichrist comes from the Greek
ἀντίχριστος (antichristos)
which appears only in John's letters.
The prefix anti carries two related meanings:
- against Christ
- in place of Christ
Thus an antichrist is not merely someone hostile to Christianity.
It is someone who opposes Christ while presenting a counterfeit version of Him.
John identifies several marks of antichrists.
They:
- deny the true identity of Jesus (1 John 2:22)
- deny the Father and the Son
- reject apostolic teaching
- deceive believers
- depart from the apostolic Church
John therefore distinguishes between:
The coming Antichrist
(associated with the last days)
and
Many antichrists
already active during his own lifetime.
The "spirit of antichrist" was already at work in the first century.
"The Last Hour"
John begins:
"Children, it is the last hour."
This does not necessarily mean the end of the world was expected within months.
Rather, according to New Testament theology,
the coming of Christ inaugurated the last age of salvation history.
Hebrews 1:2 likewise teaches that God has spoken "in these last days" through His Son.
The Church has lived in the "last days" since Pentecost.
Verse-by-Verse Exegesis
1 John 2:18
"Children, it is the last hour..."
John affectionately addresses believers as a father.
He warns that false teachers are evidence that the Church now lives amid spiritual conflict.
The appearance of "many antichrists" fulfills Jesus' warnings.
Compare:
Matthew 24:24
"False Christs and false prophets will arise..."
Acts 20:29–30
Paul warned:
"From among your own selves will arise men speaking twisted things..."
Already, Scripture predicts internal division—not merely persecution from outside.
"Many Antichrists Have Come"
Notice the plural.
John is not discussing only one future individual.
He says
many antichrists
already exist.
This demonstrates that the antichrist spirit includes false teachers throughout history.
The ultimate Antichrist may still come,
but numerous predecessors already existed.
1 John 2:19
This verse is among the strongest biblical statements regarding apostolic continuity.
"They went out from us..."
Observe the sequence.
They were once associated with the Christian community.
Then they departed.
John does not say:
"We left them."
Instead,
they left the apostolic fellowship.
"They Went Out"
The Greek verb
ἐξῆλθαν (exēlthan)
means
"they departed"
or
"they went away."
This indicates an actual separation.
Historically,
this corresponds to schism.
"From Us"
The Greek phrase
ἐξ ἡμῶν (ex hēmōn)
means
"out of us"
or
"from our midst."
John speaks of one identifiable apostolic communion.
He does not describe many equally legitimate churches.
Instead,
there is
one apostolic fellowship
from which false teachers departed.
"They Were Not Of Us"
This statement does not mean they never physically belonged.
Rather,
John explains that their departure revealed the absence of genuine perseverance in apostolic faith.
Their actions exposed their true spiritual condition.
"If They Had Been Of Us"
John introduces a condition.
If they truly shared apostolic faith,
they would have remained.
The test of authenticity is perseverance.
"They Would Have Continued With Us"
The Greek verb
μένω (menō)
is one of John's favorite theological words.
It means
- remain
- abide
- continue
- stay
The same word appears repeatedly in John 15.
Jesus says:
"Abide in Me."
True disciples
remain.
False teachers
depart.
This is not merely organizational loyalty.
It is perseverance in apostolic truth.
"That It Might Become Plain"
Their departure served to expose error.
Schism became evidence.
Instead of proving the apostolic Church false,
their departure demonstrated who truly remained faithful.
Biblical Theme of Remaining
John consistently teaches that genuine believers remain in apostolic teaching.
Examples include:
John 8:31
"If you continue in my word..."
John 15:4
"Abide in me..."
2 John 9
"Whoever goes ahead and does not remain in the teaching of Christ does not have God."
The pattern is unmistakable.
Remaining is the biblical mark of authentic discipleship.
Departing from apostolic doctrine is portrayed as evidence of error.
Apologetic Reflection
Some argue that doctrinal divisions are unimportant so long as one believes in Jesus.
St. John offers a different perspective.
He links three realities together:
- right doctrine,
- communion with the apostolic Church,
- perseverance.
The false teachers did not simply disagree over minor issues.
They rejected apostolic teaching and separated themselves from apostolic fellowship.
John does not encourage believers to form a rival community.
Instead, he reassures the faithful that those who departed have revealed themselves by leaving the apostolic communion.
This passage therefore lays an important biblical foundation for later Catholic teaching on the unity of the Church, apostolic succession, and the necessity of remaining in the faith handed down by the Apostles (cf. Jude 3).
Timeline (Part I)
| Date | Event |
|---|---|
| AD 30–33 | Christ establishes His Church and commissions the Apostles (Matthew 16:18–19; 28:18–20). |
| AD 33 | Pentecost inaugurates the Church (Acts 2). |
| AD 50–65 | Apostolic missions establish churches throughout the Roman Empire. |
| AD 65–95 | False teachers and early schisms arise (Acts 20:29–30; 2 Peter 2; 1 John). |
| AD 85–95 | St. John writes First John, warning against the "many antichrists." |
Preview of Part II
Part II will examine:
- Does 1 John 2:19 support the Catholic doctrine of the visible Church?
- Protestant interpretations and Catholic responses.
- The Greek meaning of menō ("remain") and its theological significance.
- Connections with Matthew 16:18, John 17, Acts 20, Jude 3, and 2 Thessalonians 2:15.
- Why this passage became important in Catholic apologetics concerning apostolic succession and ecclesial unity.
Selected Footnotes (Chicago Style)
- The Holy Bible, English Standard Version (Wheaton, IL: Crossway, 2016), 1 John 2:18–19.
- Bruce M. Metzger, The Canon of the New Testament (Oxford: Oxford University Press, 1987), 42–46.
- Raymond E. Brown, The Epistles of John (Anchor Yale Bible; New Haven: Yale University Press, 1982), 334–356.
- The Catechism of the Catholic Church, 2nd ed. (Vatican City: Libreria Editrice Vaticana, 1997), §§817–822, 675–677.
- St. Irenaeus, Against Heresies 3.16.5.
- St. Augustine, Homilies on the First Epistle of John, Homily 3.
- Rudolf Schnackenburg, The Johannine Epistles (New York: Crossroad, 1992), 126–136.
- Daniel Akin, 1, 2, 3 John (Nashville: B&H Academic, 2001), 104–115.
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