What Is an Apostle in the Bible? Understanding the Foundation of the Church

"Apostle" is one of those words that has become so familiar it has lost its force. We paste it on church names, use it as an honorific, and deploy it freely without asking what it actually meant in the New Testament. But understanding what an apostle is — and what the apostolic office accomplished — is essential for understanding the church and its foundation.

The Etymology

The Greek word apostolos means "one who is sent" — from apostellō, "to send." An apostle is a commissioned representative, an authorized emissary. The word was used in Greek culture for naval envoys and ambassadors sent by a ruler with full authority to speak and act on the sender's behalf.

In the New Testament, Jesus is described as "the apostle and high priest whom we confess" (Hebrews 3:1) — the supreme sent one from the Father. And he sends others with his authority: "As the Father has sent me, I am sending you" (John 20:21).

The Twelve

The core of the apostolic concept is the Twelve — the group Jesus personally selected after a night of prayer (Luke 6:12–16):

Simon Peter, Andrew, James (son of Zebedee), John, Philip, Bartholomew, Matthew, Thomas, James (son of Alphaeus), Thaddaeus, Simon the Zealot, and Judas Iscariot (later replaced by Matthias, Acts 1:26).

Jesus "appointed twelve that they might be with him and that he might send them out to preach" (Mark 3:14). Two purposes: to be with him (personal formation through shared life) and to be sent out to preach (mission).

After Pentecost, the Twelve became the foundational leadership of the Jerusalem church and the primary witnesses of Jesus' resurrection. The replacement of Judas (Acts 1:15–26) shows that the Twelve was understood as a specific, essential group with a precise number — the twelve thrones for the twelve tribes of Israel (Matthew 19:28).

The Criteria for Apostleship

From the replacement of Judas (Acts 1:21–22), we can identify the primary criterion: an apostle must have been with Jesus during his entire earthly ministry and must be a witness of the resurrection. "It is necessary to choose one of the men who have been with us the whole time the Lord Jesus was living among us, beginning from John's baptism to the time when Jesus was taken up from us. For one of these must become a witness with us of his resurrection."

This criterion explains Paul's unusual apostleship: Paul didn't meet Jesus during his earthly ministry, but he saw the risen Jesus on the Damascus road (Acts 9:3–6; 1 Corinthians 15:8) and was directly commissioned by him. Paul defends his apostleship vigorously (Galatians 1:11–12; 2 Corinthians 11–12) precisely because it was contested.

Paul: The Apostle to the Gentiles

Paul is the dominant apostle of the New Testament in terms of literary output (13 epistles) and missionary range. He describes himself as "an apostle sent not from men nor by a man, but by Jesus Christ and God the Father" (Galatians 1:1). His apostleship was confirmed by signs and wonders (2 Corinthians 12:12; Romans 15:19), recognized by the Jerusalem apostles (Galatians 2:7–9), and demonstrated by the churches he founded.

Paul's unique calling was to the Gentiles (non-Jews): "I am not ashamed of the gospel, because it is the power of God that brings salvation to everyone who believes: first to the Jew, then to the Gentile" (Romans 1:16; cf. Acts 9:15; 22:21; 26:17). His missionary journeys opened the gospel to the Mediterranean world.

The Wider Use of "Apostle"

The New Testament also uses apostolos more broadly. Barnabas is called an apostle (Acts 14:14). James, the brother of Jesus, appears to function as an apostle in Jerusalem (Galatians 1:19). Andronicus and Junia are "outstanding among the apostles" (Romans 16:7 — though whether this means they were apostles or were outstanding in the eyes of the apostles is debated). Silas and Timothy are called apostles in 1 Thessalonians 2:6 (with Paul).

This broader use suggests a distinction between:

• Apostles with a capital A — the Twelve plus Paul, with foundational, unrepeatable authority
• apostles with a lowercase a — gifted messengers and church planters with a more general apostolic function

The Apostles' Authority and Function

The foundational apostles exercised unique authority:

Doctrinal authority: "They devoted themselves to the apostles' teaching" (Acts 2:42). The apostles were the authoritative teachers whose doctrine defined the church.

Church foundation: "The church is built on the foundation of the apostles and prophets, with Christ Jesus himself as the chief cornerstone" (Ephesians 2:20). Their foundational work was unique and once-for-all.

Scripture: The New Testament writings are apostolic writings — either written by apostles or under their direct authorization (Mark's Gospel under Peter's authority; Luke-Acts under Paul's). The apostolic writings are the permanent deposit of doctrine for the church in every age.

Signs and wonders: "The things that mark an apostle — signs, wonders and miracles — were done among you" (2 Corinthians 12:12). These authenticated the apostolic message.

Are There Apostles Today?

This is one of the most contested questions in contemporary Christianity.

Cessationist view: The apostolic office (in its foundational sense) ended with the first generation — either with the last of the Twelve or with Paul. No one today can meet the criterion of having been a personal witness of the resurrection. The "foundation" of Ephesians 2:20 was laid once; you don't keep relaying the foundation. What we have now is apostolic authority mediated through the Scripture the apostles left us.

Continuationist view: The gift of apostleship continues in a non-foundational sense — gifted church planters, missionary pioneers, and cross-cultural gospel bearers who function "apostolically" (sent out, establishing new churches) even if they don't hold the unrepeatable authority of the Twelve or Paul.

New Apostolic Reformation (NAR): A movement holding that God is restoring the full five-fold offices (Ephesians 4:11: apostles, prophets, evangelists, pastors, teachers) including foundational apostles with the same authority as the original Twelve. Most evangelical theologians regard this as a serious error that opens the door to unaccountable spiritual authority.

The majority evangelical view: the foundational apostolic office is closed; the broader apostolic function (church planting, pioneering missionary work) continues.

What the Apostles Left Us

The apostles' most lasting contribution is the New Testament — the deposit of doctrine that governs the church in every generation. "Dear friends, although I was very eager to write to you about the salvation we share, I felt compelled to write and urge you to contend for the faith that was once for all entrusted to God's holy people" (Jude 3). "Once for all" — the faith delivered through the apostles is not revised or supplemented by later revelation.

The apostolicity of the church (one of the four classical marks: one, holy, catholic, apostolic) means faithfulness to the teaching of the apostles as preserved in Scripture — not the presence of office-holders claiming apostolic succession.

A Prayer

Lord, thank you for the apostles — the men you personally chose, trained, sent out, and through whom you preserved the gospel for all generations. I receive with gratitude their teaching, preserved in Scripture, as the authoritative word by which I measure everything. Keep me faithful to apostolic truth in a world that always wants a new, easier gospel. And where I have an apostolic calling in the broad sense — to go, to send, to pioneer — give me courage to fulfill it. Amen.

Frequently Asked Questions

Were there female apostles? The Twelve were all male. The wider circle of apostolic figures may include Junia (Romans 16:7), though the interpretation of this passage is debated. The question of female apostles depends partly on how broadly one defines the term.

Is the Pope an apostle? The Catholic doctrine of apostolic succession holds that bishops are successors to the apostles, with the Pope being Peter's successor. Most Protestant theologians reject this, holding that apostolic succession is a matter of doctrinal continuity (faithfulness to apostolic teaching) rather than an unbroken chain of office-holders.

What is the difference between an apostle and a missionary? A missionary is someone sent to cross cultural or geographic boundaries with the gospel — a modern equivalent of the apostolic function but not the apostolic office. "Missionary" derives from the Latin equivalent of apostolos.

Why do some churches claim to have apostles today? Some charismatic and Pentecostal movements hold that the full five-fold ministry of Ephesians 4:11 — including foundational apostles — continues today. Critics argue this claim lacks biblical support for the foundational sense and creates dangerous structures of unaccountable authority.