To provide some basic background for my article ‘Travelling with an apostle‘, I used the AI tool ChatGPT. In case you’re interested here’s the prompt I used (in blue) and the result returned by the AI. I then wrote my article, not based on the ChatGPT output, but informed by it. It’s easy to use to research any topic and can be a big time saver.
To try it yourself just visit chatgpt.com, it’ll open in a new tab.
My Prompt:
Explain what is meant by the word ‘apostle’ and how the meaning or interpretation may have changed over time.
ChatGPT’s response:
The word “apostle” comes from the Greek ἀπόστολος (apostolos), and its meaning has both a linguistic history and a history of interpretation shaped by theology and church practice.
1. Original Greek meaning
In classical Greek, apostolos meant “one who is sent out” — a messenger, envoy, or delegate. It derives from the verb ἀποστέλλω (apostellō), meaning to send off or to dispatch. The term could be used in secular contexts for:
- a naval expedition or fleet
- an official envoy or ambassador
- a commissioned representative sent with authority
The key idea was authorized sending — someone acting on behalf of another.
2. Use in the New Testament
In the New Testament, the word takes on a more specific religious meaning.
a. The Twelve Apostles
Most prominently, it refers to the Twelve chosen by Jesus (e.g., Mark 3:14; Luke 6:13). Here, an apostle is:
- personally chosen by Jesus
- commissioned to preach and teach
- given authority to act in his name
In this sense, “apostle” becomes almost a technical title. The Twelve symbolize the restoration of the twelve tribes of Israel and serve as foundational witnesses to Jesus’ ministry and resurrection.
b. A broader missionary sense
The New Testament also uses apostolos more broadly. Figures like Paul, Barnabas, and possibly Junia (Romans 16:7) are called apostles. Paul emphasizes that his apostleship comes from being sent by Christ, not from human appointment (Galatians 1:1).
Here the meaning expands to:
A commissioned messenger of Christ sent to establish and guide communities.
This sense highlights mission and authority, not just membership in the Twelve.
3. Early Christian development
As Christianity spread, the term evolved further.
a. Apostles as foundational witnesses
By the late 1st and 2nd centuries, “apostle” increasingly referred to the original generation of eyewitnesses to Jesus. Apostolic authority became linked to:
- authentic teaching
- continuity with the original witnesses
- the foundation of the church
This gave rise to the idea of apostolic tradition and later apostolic succession — the belief that church leaders inherit authority through an historical chain tracing back to the apostles.
b. Narrowing of the term
Over time, many Christian traditions restricted the title to the earliest figures. In much of Catholic, Orthodox, and traditional Protestant theology:
- the apostles are a unique, unrepeatable group
- their authority is foundational rather than ongoing in the same form
4. Later and modern interpretations
a. Missionary and honorary usage
In later centuries, “apostle” was sometimes used honorifically, such as:
- “Apostle to the Gentiles” (Paul)
- “Apostle to Ireland” (St. Patrick)
- “Apostle of Germany” (St. Boniface)
Here it means an exceptionally influential missionary, not a member of the original apostolic circle.
b. Contemporary Christian movements
Some modern Christian groups, especially in charismatic and restorationist movements, use “apostle” for contemporary leaders who are seen as:
- church planters
- spiritual overseers
- pioneers of new ministries
This reflects a return to the broader New Testament sense of sent ones, though it is debated among Christians. Many denominations reject applying the title to modern figures, arguing that apostolic authority was unique to the early church.
5. Summary of the shift in meaning
Across time, the meaning of apostle has moved through several stages:
- Classical Greek: a commissioned envoy or messenger
- New Testament (narrow): the Twelve chosen by Jesus
- New Testament (broad): missionaries sent with Christ’s authority
- Early church: foundational eyewitnesses and guarantors of tradition
- Later usage: honorary title for great missionaries
- Modern movements: active leadership office in some churches
The constant thread is authorized sending, but the scope of who qualifies — and what authority they carry — has been interpreted differently depending on historical and theological context.
If you like, I can compare how different Christian traditions (Catholic, Orthodox, Protestant, and charismatic) specifically understand apostles today, or look more closely at how Paul defended his apostleship.
Journeys of Heart and Mind 
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